diff --git a/apps/api/src/modules/listings/repositories/listing-repository.js b/apps/api/src/modules/listings/repositories/listing-repository.js
index 5299018..5356ee6 100644
--- a/apps/api/src/modules/listings/repositories/listing-repository.js
+++ b/apps/api/src/modules/listings/repositories/listing-repository.js
@@ -17,6 +17,8 @@ import {
   marketValueOverrides,
   marketValuations,
   products,
+  sellers,
+  sellerSettings,
 } from "../../../infrastructure/database/schema.js";
 
 export function createListingRepository(db) {
@@ -220,7 +222,12 @@ export function createListingRepository(db) {
 
     async findPublicById(listingId) {
       const [result] = await db
-        .select({ listing: listings, condition: conditions })
+        .select({
+          listing: listings,
+          condition: conditions,
+          sellerDisplayName: sellers.displayName,
+          sellerSettings: sellerSettings.settings,
+        })
         .from(listings)
         .innerJoin(
           inventoryItems,
@@ -228,6 +235,8 @@ export function createListingRepository(db) {
         )
         .innerJoin(products, eq(products.id, inventoryItems.productId))
         .innerJoin(conditions, eq(conditions.id, inventoryItems.conditionId))
+        .innerJoin(sellers, eq(sellers.id, products.sellerId))
+        .leftJoin(sellerSettings, eq(sellerSettings.sellerId, sellers.id))
         .where(
           and(
             eq(listings.id, listingId),
@@ -263,6 +272,9 @@ export function createListingRepository(db) {
         marketValueMinor: override?.valueMinor ?? valuation?.valueMinor ?? null,
         marketValueCurrency: override?.currency ?? valuation?.currency ?? null,
         marketValueUpdatedAt: override?.createdAt ?? valuation?.calculatedAt ?? null,
+        sellerDisplayName: result.sellerDisplayName,
+        sellerContactEmail: result.sellerSettings?.general?.publicContactEmail ?? null,
+        sellerContactPhone: result.sellerSettings?.general?.publicContactPhone ?? null,
       };
     },
 
diff --git a/apps/api/src/modules/products/repositories/product-repository.js b/apps/api/src/modules/products/repositories/product-repository.js
index e0d2cb7..9bd3729 100644
--- a/apps/api/src/modules/products/repositories/product-repository.js
+++ b/apps/api/src/modules/products/repositories/product-repository.js
@@ -4,6 +4,8 @@ import {
   inventoryItems,
   listings,
   products,
+  sellers,
+  sellerSettings,
 } from '../../../infrastructure/database/schema.js';
 
 export function createProductRepository(db) {
@@ -24,10 +26,16 @@ export function createProductRepository(db) {
 
     async findPublicBySlug(slug) {
       const [result] = await db
-        .select({ product: products })
+        .select({
+          product: products,
+          sellerDisplayName: sellers.displayName,
+          sellerSettings: sellerSettings.settings,
+        })
         .from(products)
         .innerJoin(inventoryItems, eq(inventoryItems.productId, products.id))
         .innerJoin(listings, eq(listings.inventoryItemId, inventoryItems.id))
+        .innerJoin(sellers, eq(sellers.id, products.sellerId))
+        .leftJoin(sellerSettings, eq(sellerSettings.sellerId, sellers.id))
         .where(and(
           eq(products.slug, slug),
           eq(inventoryItems.status, 'ACTIVE'),
@@ -35,7 +43,13 @@ export function createProductRepository(db) {
         ))
         .limit(1);
 
-      return result?.product ?? null;
+      if (!result) return null;
+      return {
+        ...result.product,
+        sellerDisplayName: result.sellerDisplayName,
+        sellerContactEmail: result.sellerSettings?.general?.publicContactEmail ?? null,
+        sellerContactPhone: result.sellerSettings?.general?.publicContactPhone ?? null,
+      };
     },
 
     async findBySellerIdAndSlug(sellerId, slug) {
diff --git a/apps/api/tests/http/public-listing-routes.test.js b/apps/api/tests/http/public-listing-routes.test.js
index c4f9153..d5492b6 100644
--- a/apps/api/tests/http/public-listing-routes.test.js
+++ b/apps/api/tests/http/public-listing-routes.test.js
@@ -36,6 +36,9 @@ function createTestApp() {
           conditionId: 'condition-1',
           askingPriceMinor: 2499,
           status: 'PENDING',
+          sellerDisplayName: 'Pika Collectibles',
+          sellerContactEmail: 'hello@pika.example',
+          sellerContactPhone: null,
         };
       },
     },
@@ -72,6 +75,8 @@ test('returns a public listing detail or a not-found response', async (testConte
 
   assert.equal(detailResponse.statusCode, 200);
   assert.equal('inventoryItemId' in detailResponse.json().data, false);
+  assert.equal(detailResponse.json().data.sellerDisplayName, 'Pika Collectibles');
+  assert.equal(detailResponse.json().data.sellerContactEmail, 'hello@pika.example');
   assert.equal(missingResponse.statusCode, 404);
   assert.equal(missingResponse.json().error.code, 'LISTING_NOT_FOUND');
 });
\ No newline at end of file
diff --git a/apps/api/tests/http/public-product-routes.test.js b/apps/api/tests/http/public-product-routes.test.js
index ad681a8..5fd8a0e 100644
--- a/apps/api/tests/http/public-product-routes.test.js
+++ b/apps/api/tests/http/public-product-routes.test.js
@@ -21,6 +21,9 @@ function createTestApp() {
           name: 'Pikachu Plush',
           slug,
           description: 'A friendly plush.',
+          sellerDisplayName: 'Pika Collectibles',
+          sellerContactEmail: 'hello@pika.example',
+          sellerContactPhone: null,
           createdAt: new Date('2026-09-07T00:00:00.000Z'),
           updatedAt: new Date('2026-09-07T00:00:00.000Z'),
         };
@@ -51,6 +54,9 @@ test('returns a public product without private seller identity', async (testCont
     eventName: null,
     releaseYear: null,
     tags: [],
+    sellerDisplayName: 'Pika Collectibles',
+    sellerContactEmail: 'hello@pika.example',
+    sellerContactPhone: null,
     createdAt: '2026-09-07T00:00:00.000Z',
     updatedAt: '2026-09-07T00:00:00.000Z',
   });
diff --git a/apps/web/src/components/organisms/CollectibleDetail.stories.js b/apps/web/src/components/organisms/CollectibleDetail.stories.js
index a8586bd..7948a3d 100644
--- a/apps/web/src/components/organisms/CollectibleDetail.stories.js
+++ b/apps/web/src/components/organisms/CollectibleDetail.stories.js
@@ -24,6 +24,9 @@ export const ListingDetail = {
       { id: "front", label: "FRONT", alt: "Front of Charizard ex" },
       { id: "back", label: "BACK", alt: "Back of Charizard ex" },
     ],
+    sellerDisplayName: "Pika Collectibles",
+    sellerContactEmail: "hello@pika.example",
+    sellerContactPhone: "555-0100",
   },
 };
 
diff --git a/apps/web/src/components/organisms/CollectibleDetail.vue b/apps/web/src/components/organisms/CollectibleDetail.vue
index 250b30d..c3c5448 100644
--- a/apps/web/src/components/organisms/CollectibleDetail.vue
+++ b/apps/web/src/components/organisms/CollectibleDetail.vue
@@ -15,6 +15,9 @@ defineProps({
   description: { type: String, default: "" },
   facts: { type: Array, default: () => [] },
   images: { type: Array, default: () => [] },
+  sellerDisplayName: { type: String, default: "" },
+  sellerContactEmail: { type: String, default: "" },
+  sellerContactPhone: { type: String, default: "" },
 });
 </script>
 
@@ -47,6 +50,14 @@ defineProps({
           <dd>{{ fact.value }}</dd>
         </div>
       </dl>
+      <section v-if="sellerDisplayName" class="collectible-detail__seller" aria-labelledby="collectible-detail-seller-title">
+        <p id="collectible-detail-seller-title" class="catalog-kicker">Sold by</p>
+        <p class="collectible-detail__seller-name">{{ sellerDisplayName }}</p>
+        <ul v-if="sellerContactEmail || sellerContactPhone" class="collectible-detail__seller-contacts">
+          <li v-if="sellerContactEmail"><a :href="`mailto:${sellerContactEmail}`">{{ sellerContactEmail }}</a></li>
+          <li v-if="sellerContactPhone"><a :href="`tel:${sellerContactPhone}`">{{ sellerContactPhone }}</a></li>
+        </ul>
+      </section>
     </div>
   </article>
 </template>
@@ -72,6 +83,23 @@ defineProps({
   align-items: center;
   gap: var(--space-4);
 }
+.collectible-detail__seller {
+  border-top: var(--border-thin) solid var(--color-border);
+  padding-top: var(--space-4);
+}
+.collectible-detail__seller-name {
+  font-weight: var(--weight-bold);
+}
+.collectible-detail__seller-contacts {
+  display: grid;
+  gap: var(--space-1);
+  margin: var(--space-2) 0 0;
+  padding: 0;
+  list-style: none;
+}
+.collectible-detail__seller-contacts a {
+  color: var(--color-interactive-text);
+}
 @media (max-width: 768px) {
   .collectible-detail {
     grid-template-columns: 1fr;
diff --git a/apps/web/src/pages/ListingDetailPage.vue b/apps/web/src/pages/ListingDetailPage.vue
index 5e01fd0..c55cd58 100644
--- a/apps/web/src/pages/ListingDetailPage.vue
+++ b/apps/web/src/pages/ListingDetailPage.vue
@@ -45,6 +45,9 @@ onMounted(async () => {
       "
       :description="listing.notes"
       :images="listing.images"
+      :seller-display-name="listing.sellerDisplayName"
+      :seller-contact-email="listing.sellerContactEmail"
+      :seller-contact-phone="listing.sellerContactPhone"
     />
   </main>
 </template>
diff --git a/apps/web/src/pages/ProductDetailPage.vue b/apps/web/src/pages/ProductDetailPage.vue
index 4a2df74..f6c217f 100644
--- a/apps/web/src/pages/ProductDetailPage.vue
+++ b/apps/web/src/pages/ProductDetailPage.vue
@@ -37,6 +37,9 @@ onMounted(async () => {
         ...(product.cardNumber ? [{ label: 'Card number', value: product.cardNumber }] : []),
         ...(product.releaseYear ? [{ label: 'Release year', value: product.releaseYear }] : []),
       ]"
+      :seller-display-name="product.sellerDisplayName"
+      :seller-contact-email="product.sellerContactEmail"
+      :seller-contact-phone="product.sellerContactPhone"
     />
   </main>
 </template>
\ No newline at end of file
diff --git a/docs/IMPLEMENTATION-STATUS.md b/docs/IMPLEMENTATION-STATUS.md
index 06e0fb6..19d2317 100644
--- a/docs/IMPLEMENTATION-STATUS.md
+++ b/docs/IMPLEMENTATION-STATUS.md
@@ -96,6 +96,7 @@ docker context use orbstack
 - Public product pages are available at `GET /api/v1/public/products/:slug`; responses use a public DTO and require an active physical item with an available or pending listing.
 - Public listing collection and detail reads are available at `GET /api/v1/public/listings` and `GET /api/v1/public/listings/:id`; collection responses include pagination metadata and detail reads hide internal inventory identity.
 - Public listing detail responses include safe condition labels, latest market value, and public image URLs; unavailable image states are rendered accessibly in the gallery.
+- Public listing and product detail responses and pages now surface the seller's display name and configured public contact methods (email/phone) from seller settings, satisfying the documented public detail requirement.
 - Public inventory collection and detail reads are available at `GET /api/v1/public/inventory` and `GET /api/v1/public/inventory/:id`; responses join only active physical items to available or pending listings and exclude private item notes.
 - The public seller directory is available at `GET /api/v1/public/sellers`; it returns only sellers with visible inventory and exposes display identity without user or contact fields.
 - The web workspace now has a Vue/Vite public catalog shell with Vue Router, a catalog API service, search composable, loading/error/empty states, and responsive search-first styling.
diff --git a/packages/contracts/public-listing.js b/packages/contracts/public-listing.js
index d894868..d024ae8 100644
--- a/packages/contracts/public-listing.js
+++ b/packages/contracts/public-listing.js
@@ -17,6 +17,9 @@ export function toPublicListingDto(listing) {
     status: listing.status,
     notes: listing.notes ?? null,
     images: listing.images ?? [],
+    sellerDisplayName: listing.sellerDisplayName ?? null,
+    sellerContactEmail: listing.sellerContactEmail ?? null,
+    sellerContactPhone: listing.sellerContactPhone ?? null,
     createdAt: toIsoString(listing.createdAt),
     updatedAt: toIsoString(listing.updatedAt),
   };
diff --git a/packages/contracts/public-product.js b/packages/contracts/public-product.js
index 0724b03..b749c19 100644
--- a/packages/contracts/public-product.js
+++ b/packages/contracts/public-product.js
@@ -15,6 +15,9 @@ export function toPublicProductDto(product) {
     eventName: product.eventName ?? null,
     releaseYear: product.releaseYear ?? null,
     tags: product.tags ?? [],
+    sellerDisplayName: product.sellerDisplayName ?? null,
+    sellerContactEmail: product.sellerContactEmail ?? null,
+    sellerContactPhone: product.sellerContactPhone ?? null,
     createdAt: toIsoString(product.createdAt),
     updatedAt: toIsoString(product.updatedAt),
   };