diff --git a/osrlib/osrlib/treasure.py b/osrlib/osrlib/treasure.py
index 645810a..9e9cb01 100644
--- a/osrlib/osrlib/treasure.py
+++ b/osrlib/osrlib/treasure.py
@@ -19,7 +19,7 @@
 class TreasureDetail:
     """Defines the characteristics of a particular "unit" of treasure (coins, gems, magic items, ...) in a treasure type.
 
-    This class dictatd the attributes of each item type within a defined treasure type. It outlines the chance of
+    This class dictates the attributes of each item type within a defined treasure type. It outlines the chance of
     occurrence, the amount (in dice notation or a fixed number), and whether the item is magical. This class is used
     by the `Treasure` class, but you can also use it to customize the contents of treasure hauls by creating your own
     treasure types.
@@ -138,10 +138,6 @@ class Treasure:
             ItemType.MAGIC_ITEM: TreasureDetail(chance=15, amount="6", magical=True),
         },
         TreasureType.I: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
-            CoinType.SILVER: TreasureDetail(chance=0, amount="0"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
-            CoinType.GOLD: TreasureDetail(chance=0, amount="0"),
             CoinType.PLATINUM: TreasureDetail(chance=30, amount="1d8"),
             ItemType.GEMS_JEWELRY: TreasureDetail(chance=50, amount="2d6"),
             ItemType.MAGIC_ITEM: TreasureDetail(chance=15, amount="1", magical=True),
@@ -149,113 +145,48 @@ class Treasure:
         TreasureType.J: {
             CoinType.COPPER: TreasureDetail(chance=25, amount="1d4"),
             CoinType.SILVER: TreasureDetail(chance=10, amount="1d3"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
-            CoinType.GOLD: TreasureDetail(chance=0, amount="0"),
-            CoinType.PLATINUM: TreasureDetail(chance=0, amount="0"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=0, amount="0"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=0, amount="0", magical=True),
         },
         TreasureType.K: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
             CoinType.SILVER: TreasureDetail(chance=30, amount="1d6"),
             CoinType.ELECTRUM: TreasureDetail(chance=10, amount="1d2"),
-            CoinType.GOLD: TreasureDetail(chance=0, amount="0"),
-            CoinType.PLATINUM: TreasureDetail(chance=0, amount="0"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=0, amount="0"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=0, amount="0", magical=True),
         },
         TreasureType.L: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
-            CoinType.SILVER: TreasureDetail(chance=0, amount="0"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
-            CoinType.GOLD: TreasureDetail(chance=100, amount="1d100"),
-            CoinType.PLATINUM: TreasureDetail(chance=0, amount="0"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=50, amount="1d6"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=30, amount="2", magical=True),
+            ItemType.GEMS_JEWELRY: TreasureDetail(chance=50, amount="1d4"),
         },
         TreasureType.M: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
-            CoinType.SILVER: TreasureDetail(chance=0, amount="0"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
-            CoinType.GOLD: TreasureDetail(chance=40, amount="2d8"),
-            CoinType.PLATINUM: TreasureDetail(chance=50, amount="5d30"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=55, amount="5d20"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=0, amount="0", magical=True),
+            CoinType.GOLD: TreasureDetail(chance=40, amount="2d4"),
+            CoinType.PLATINUM: TreasureDetail(chance=50, amount="5d6"),
+            ItemType.GEMS_JEWELRY: TreasureDetail(chance=55, amount="5d4"),
         },
         TreasureType.N: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
-            CoinType.SILVER: TreasureDetail(chance=0, amount="0"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
-            CoinType.GOLD: TreasureDetail(chance=0, amount="0"),
-            CoinType.PLATINUM: TreasureDetail(chance=0, amount="0"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=45, amount="2d12"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=40, amount="2d8", magical=True),
+            ItemType.MAGIC_ITEM: TreasureDetail(chance=40, amount="2d4", magical=True),
         },
         TreasureType.O: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
-            CoinType.SILVER: TreasureDetail(chance=0, amount="0"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
-            CoinType.GOLD: TreasureDetail(chance=0, amount="0"),
-            CoinType.PLATINUM: TreasureDetail(chance=0, amount="0"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=50, amount="1d4"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=0, amount="0", magical=True),
+            ItemType.MAGIC_ITEM: TreasureDetail(chance=50, amount="1d4", magical=True),
         },
         TreasureType.P: {
             CoinType.COPPER: TreasureDetail(chance=100, amount="4d6"),
-            CoinType.SILVER: TreasureDetail(chance=0, amount="0"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
-            CoinType.GOLD: TreasureDetail(chance=0, amount="0"),
-            CoinType.PLATINUM: TreasureDetail(chance=0, amount="0"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=0, amount="0"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=0, amount="0", magical=True),
         },
         TreasureType.Q: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
             CoinType.SILVER: TreasureDetail(chance=100, amount="3d6"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
-            CoinType.GOLD: TreasureDetail(chance=0, amount="0"),
-            CoinType.PLATINUM: TreasureDetail(chance=0, amount="0"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=0, amount="0"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=0, amount="0", magical=True),
         },
         TreasureType.R: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
-            CoinType.SILVER: TreasureDetail(chance=0, amount="0"),
             CoinType.ELECTRUM: TreasureDetail(chance=100, amount="2d6"),
-            CoinType.GOLD: TreasureDetail(chance=0, amount="0"),
-            CoinType.PLATINUM: TreasureDetail(chance=0, amount="0"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=0, amount="0"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=0, amount="0", magical=True),
         },
         TreasureType.S: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
-            CoinType.SILVER: TreasureDetail(chance=0, amount="0"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
             CoinType.GOLD: TreasureDetail(chance=100, amount="2d4"),
-            CoinType.PLATINUM: TreasureDetail(chance=0, amount="0"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=0, amount="0"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=0, amount="0", magical=True),
         },
         TreasureType.T: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
-            CoinType.SILVER: TreasureDetail(chance=0, amount="0"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
-            CoinType.GOLD: TreasureDetail(chance=0, amount="0"),
             CoinType.PLATINUM: TreasureDetail(chance=100, amount="1d6"),
-            ItemType.GEMS_JEWELRY: TreasureDetail(chance=0, amount="0"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=0, amount="0", magical=True),
         },
         TreasureType.U: {
             CoinType.COPPER: TreasureDetail(chance=10, amount="1d100"),
             CoinType.SILVER: TreasureDetail(chance=10, amount="1d100"),
-            CoinType.ELECTRUM: TreasureDetail(chance=0, amount="0"),
             CoinType.GOLD: TreasureDetail(chance=5, amount="1d100"),
-            CoinType.PLATINUM: TreasureDetail(chance=100, amount="0"),
             ItemType.GEMS_JEWELRY: TreasureDetail(chance=5, amount="1d4"),
-            ItemType.MAGIC_ITEM: TreasureDetail(chance=200, amount="1", magical=True),
+            ItemType.MAGIC_ITEM: TreasureDetail(chance=2, amount="1", magical=True),
         },
         TreasureType.V: {
-            CoinType.COPPER: TreasureDetail(chance=0, amount="0"),
             CoinType.SILVER: TreasureDetail(chance=10, amount="1d100"),
             CoinType.ELECTRUM: TreasureDetail(chance=5, amount="1d100"),
             CoinType.GOLD: TreasureDetail(chance=10, amount="1d100"),
diff --git a/tests/test_unit_treasure.py b/tests/test_unit_treasure.py
index 8807dec..e4f3730 100644
--- a/tests/test_unit_treasure.py
+++ b/tests/test_unit_treasure.py
@@ -6,14 +6,16 @@
 def test_treasure_total_gold_piece_value():
     custom_type = {
         CoinType.GOLD: TreasureDetail(
+            # Always 10 GP
             chance=100, amount="10", magical=False
-        ),  # 10 gold coins
+        ),
         CoinType.SILVER: TreasureDetail(
+            # Always 100 SP
             chance=100, amount="100", magical=False
-        ),  # 100 silver coins
+        ),
     }
     treasure = Treasure.from_custom_type(custom_type)
-    expected_total_gp = 20  # 10 gold + 100 silver converted to gold (10 + 10)
+    expected_total_gp = 20  # 10 GP + 100 SP (10 SP = 1 GP)
     assert treasure.total_gp_value == expected_total_gp
 
 
@@ -21,8 +23,9 @@ def test_treasure_from_custom_type():
     # Define a custom treasure type with specific items
     custom_type = {
         CoinType.GOLD: TreasureDetail(
+            # Always 5 GP
             chance=100, amount="5", magical=False
-        ),  # Always 5 gold coins
+        ),
         ItemType.MAGIC_ITEM: TreasureDetail(
             chance=50, amount="1", magical=True
         ),  # 50% chance of 1 magic item