Small Scale Military Headquarters

Is there a listing of all past and present 32x and col steel models somewhere out there?

Check out 21st's web site. They're there.

C2000

Is there a listing of all past and present 32x and col steel models somewhere out there?

As mentioned, the 21c site does, but it is not complete, there are gaps here and there, so don't expect to find every model or paint scheme ever produced.