diff --git a/openfut-adapter-fifa17/src/fut/store_catalog.rs b/openfut-adapter-fifa17/src/fut/store_catalog.rs
index 7693c13..3319cc3 100644
--- a/openfut-adapter-fifa17/src/fut/store_catalog.rs
+++ b/openfut-adapter-fifa17/src/fut/store_catalog.rs
@@ -207,9 +207,13 @@ pub fn pack_body(p: &PackDef, idx: u64, owned: bool) -> Value {
     });
     let obj = body.as_object_mut().expect("pack body is a JSON object");
     if owned {
-        // Reward/My-Packs tiles have no purchase path; drop the coin row so the
-        // client never formats an unavailable payment label as literal "undefined".
-        obj.remove("currencies");
+        // Reward/My-Packs tiles KEEP the coins currency at the pack price (0 for
+        // reward packs). My Packs opens through the store purchase flow, so a tile
+        // with no currency row is not actionable — clicking navigates instead of
+        // opening. With a free coin row the client sends POST /purchased and the
+        // server (owned-only) opens it for free. No extPrice (that is the `or %1s`
+        // mtx bug), so the free coin row formats as "0", not an unavailable label.
+        // LIVE-PROVEN 2026-08-18: a reward Silver Pack opened and revealed cards.
         obj.insert(
             "displayGroup".into(),
             json!({ "value": "mypacks", "priority": idx }),
@@ -242,6 +246,9 @@ pub fn sentinel_body(idx: u64) -> Value {
         .expect("sentinel body is a JSON object");
     obj.insert("state".into(), json!("active"));
     obj.insert("unopened".into(), json!(false));
+    // The sentinel must stay non-openable (it is only a resolve-without-crash shim
+    // for an empty My Packs), so it keeps no purchase path.
+    obj.remove("currencies");
     body
 }
 
diff --git a/openfut-adapter-fifa17/tests/fixtures/purchasegroup_pack70.json b/openfut-adapter-fifa17/tests/fixtures/purchasegroup_pack70.json
index 218d8a5..db4c3dc 100644
--- a/openfut-adapter-fifa17/tests/fixtures/purchasegroup_pack70.json
+++ b/openfut-adapter-fifa17/tests/fixtures/purchasegroup_pack70.json
@@ -212,6 +212,13 @@
       "isPremium": false,
       "sortPriority": 1,
       "displayGroupAssetId": 3,
+      "currencies": [
+        {
+          "name": "coins",
+          "funds": 0,
+          "finalFunds": 0
+        }
+      ],
       "packContentInfo": {
         "bronzeQuantity": 0,
         "silverQuantity": 0,