diff --git a/pack/overrides/kubejs/server_scripts/numismatics_tooltips.js b/pack/overrides/kubejs/server_scripts/numismatics_tooltips.js
new file mode 100644
index 0000000..6272b4b
--- /dev/null
+++ b/pack/overrides/kubejs/server_scripts/numismatics_tooltips.js
@@ -0,0 +1,24 @@
+// Brass & Sigil — Numismatics coin tooltip helper
+//
+// Numismatics' uniform x8 denomination chain (spur=1, bevel=8, cog=64,
+// crown=512, sun=4096) isn't intuitive at a glance -- people expect
+// real-world ratios like 1p/10p/20p/50p/£1. Mod values are hardcoded,
+// so the next-best thing is putting the conversion crib right on each
+// coin's tooltip.
+//
+// Players hover any coin and instantly see how it relates to the other
+// denominations + a reminder that Bank Teller blocks convert on demand.
+
+const CRIBS = {
+    'numismatics:spur':  [ '= 1 Spur (base unit)', 'Bank Teller block converts.' ],
+    'numismatics:bevel': [ '= 8 Spurs', 'Bank Teller block converts.' ],
+    'numismatics:cog':   [ '= 64 Spurs (8 Bevels)', 'Bank Teller block converts.' ],
+    'numismatics:crown': [ '= 512 Spurs (8 Cogs, 64 Bevels)', 'Bank Teller block converts.' ],
+    'numismatics:sun':   [ '= 4096 Spurs (8 Crowns)', 'Bank Teller block converts.' ],
+};
+
+ItemEvents.tooltip(event => {
+    for (const id in CRIBS) {
+        event.add(id, CRIBS[id].map(line => Text.aqua(line)));
+    }
+});
diff --git a/pack/pack.lock.json b/pack/pack.lock.json
index 33bbcdb..5065a66 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": "0.22.0",
+  "version": "0.22.1",
   "minecraft": "1.21.1",
   "loader": {
     "type": "neoforge",