Ron, Dwight and others may already have this one, but this is AE Test Bannerman #6478 with mismatched non Bannerman #6250 upper.
http://www.gunbroker.com/Auction/Vie...Item=183356734
I failed to win the auction, but thought the mismatch interesting. Kind of implies that 6250 may have been a Test itself.
The takedown lever is numbered "78" on the right side of the gun, with no Germany under frame serial #.
Clark