Fix coin + Clock materials

Assets/Models/Materials/Coin.mat

@@ -13,7 +13,7 @@ Material:
   - _EMISSION
   m_InvalidKeywords: []
   m_LightmapFlags: 1
-  m_EnableInstancingVariants: 0
+  m_EnableInstancingVariants: 1
   m_DoubleSidedGI: 0
   m_CustomRenderQueue: -1
   stringTagMap:

Assets/Models/Materials/WallClock3.mat

@@ -22,14 +22,15 @@ Material:
   m_PrefabAsset: {fileID: 0}
   m_Name: WallClock3
   m_Shader: {fileID: 4800000, guid: 933532a4fcc9baf4fa0491de14d08ed7, type: 3}
-  m_ValidKeywords: []
+  m_ValidKeywords:
+  - _ALPHATEST_ON
   m_InvalidKeywords: []
   m_LightmapFlags: 4
-  m_EnableInstancingVariants: 0
+  m_EnableInstancingVariants: 1
   m_DoubleSidedGI: 0
-  m_CustomRenderQueue: -1
+  m_CustomRenderQueue: 2450
   stringTagMap:
-    RenderType: Opaque
+    RenderType: TransparentCutout
   disabledShaderPasses: []
   m_SavedProperties:
     serializedVersion: 3
@@ -92,7 +93,7 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Ints: []
     m_Floats:
-    - _AlphaClip: 0
+    - _AlphaClip: 1
     - _Blend: 0
     - _BumpScale: 0.3
     - _ClearCoatMask: 0