EK2 Spange help!

[Carthin]

Hello, I'm looking at this EK2 spange that's for sale online at the moment. I've tried to match it with confirmed originals, but I'm not positive one way or the other. The finish on the back bothers me however, it looks almost burnt? Sorry about the bad pictures, these are the only one's the seller has posted.

Any help would be greatly appreciated!

[CMSgt]

spange

It is a Deumer. I call it Type A. Jim

[Carthin]

It is a Deumer. I call it Type A. Jim

Thank you for the authentication! Sadly it appears to have just sold a few minutes ago, at least the other guy got a good deal though!