A premium item like this requires much better pics. All I can say is it has some traits of a Godet/Zimmermann RK?
its a gamble with these pics dodgy.
if you are buying it you want high quality pics this is not a EK2 its a RK worth alot of money
if you are going to start buying RKs get the "KNIGHTS CROSS OF THE IRON CROSS" by Dietrich Maerz
really good book
Impossible to assess with only these photos. If spending thousands of dollars, you will Certainly need close up and clear photos and many more than simply 1 of each side.
"Much that once was, is lost. For none now live who remember it."
The ring placement and dates catch my eye immediately so I would be wanting much better closeup images of those areas for a start.