Key date 5 Reichsmark 1939. E for swap

I'm planning to sell a part of my world silver coins collection to focus more on my primary interests. Among the coins is a 5 Reichsmark 1939. E, a rare coin from a desirable series. I'm offering it here for swap first before selling it in case anyone needs it.



What I'm looking for in return is something like a sestertius of an emperor I don't yet have or a medieval coin that circulated in Croatia (medieval Hungary, Slavonia, Venice). I'll consider other offers too but that is what I'm most interested in.