The Eickhorn has the 35-41 seated squirrel TM and is found in the 1938 catalog.
The Packs small plane is the earliest, followed by the large C31, both found in the Pack catalog shown in Wayne's book. The Oval is the latest version, imho.
The Legion Condor is from around 38 or so.
I have no idea why, other than the Stuka, there were no modern planes on etches, although the observer plane was in production from 38 until after the war.
J
