This was SVN commit r6644.

binaries/data/mods/internal/art/actors/props/units/heads/iber_helmet_09.xml

@@ -5,7 +5,7 @@
 
   <group>
     <variant frequency="1" name="hairnet">
-      <mesh>props/helmet/iberian_09.pmd</mesh>
+      <mesh>props/helmet/iberian_09.dae</mesh>
       <texture>props/helmet/iber_09.dds</texture>
     </variant>
   </group>

binaries/data/mods/internal/art/actors/props/units/heads/iber_helmet_isw_e.xml

@@ -5,7 +5,7 @@
 
   <group>
     <variant frequency="1" name="helmet-09">
-      <mesh>props/helmet/iberian_09.pmd</mesh>
+      <mesh>props/helmet/iberian_09.dae</mesh>
       <texture>props/helmet/iber_09.dds</texture>
     </variant>
     <variant frequency="1" name="helmet-10">

binaries/data/mods/public/art/actors/props/units/heads/celt_helmet_a.xml

@@ -40,6 +40,10 @@
       <mesh>props/helmet/celt_coolus_feathers.dae</mesh>
       <texture>props/helmet/celt_a3.dds</texture>
     </variant>
+    <variant frequency="1" name="helmet-10">
+      <mesh>props/helmet/celt_coolus_spike.dae</mesh>
+      <texture>props/helmet/celt_a2.dds</texture>
+    </variant>
   </group>
 
   <material>player_trans.xml</material>

binaries/data/mods/public/art/actors/props/units/heads/hele_themistocles.xml

@@ -4,8 +4,16 @@
   <castshadow/>
 
   <group>
-    <variant name="Base">
+    <variant frequency="1" name="Helmet-Crest">
       <mesh>props/helmet/hele_helmet_o.pmd</mesh>
+    </variant>
+    <variant frequency="1" name="Helmet-High Crest">
+      <mesh>props/helmet/hele_themistocles_highcrest.dae</mesh>
+    </variant>
+  </group>
+
+  <group>
+    <variant>
       <texture>props/helmet/hele_thermistocles.dds</texture>
     </variant>
   </group>