diff --git a/pack/overrides/kubejs/server_scripts/plots.js b/pack/overrides/kubejs/server_scripts/plots.js
index a109dbd..f6c8557 100644
--- a/pack/overrides/kubejs/server_scripts/plots.js
+++ b/pack/overrides/kubejs/server_scripts/plots.js
@@ -64,15 +64,15 @@ const PLOT_DEFS = new Map([
 const REFUND_FRACTION = 0.5;     // released plots refund 50% of purchase price
 
 // ─── Numismatics coin handling ────────────────────────────────────────
-// 6 denominations on a uniform x8 chain (verified in-game 2026-05-23 via
-// user-reported Sun = 64 Cogs, which back-calculates to these values).
+// Authoritative values from in-game tooltips (verified by user 2026-05-23).
+// Chain is NON-uniform (x8, x2, x4, x8, x8) -- don't assume otherwise.
 const COIN_VALUES = {
     'numismatics:spur':     1,
     'numismatics:bevel':    8,
-    'numismatics:sprocket': 64,
-    'numismatics:cog':      512,
-    'numismatics:crown':    4096,
-    'numismatics:sun':      32768,
+    'numismatics:sprocket': 16,
+    'numismatics:cog':      64,
+    'numismatics:crown':    512,
+    'numismatics:sun':      4096,
 };
 const DENOMS_DESC = ['numismatics:sun', 'numismatics:crown', 'numismatics:cog',
                      'numismatics:sprocket', 'numismatics:bevel', 'numismatics:spur'];
diff --git a/pack/pack.lock.json b/pack/pack.lock.json
index a82b813..ecc5bfd 100644
--- a/pack/pack.lock.json
+++ b/pack/pack.lock.json
@@ -1,7 +1,7 @@
 {
   "$schema": "Brass-and-Sigil pack.lock.json - generated, do not edit by hand unless you know what you are doing",
   "name": "Brass and Sigil",
-  "version": "0.22.5",
+  "version": "0.22.6",
   "minecraft": "1.21.1",
   "loader": {
     "type": "neoforge",