you might try selling it on
http://www.gunbroker.com or even yahoo auctions. they all allow wwii items with swastikas, etc. (or at least yahoo used to, and i know gunbroker does)
since many collectors of wwii stuff are also gun collectors, might do better on the gun site, but dunno. never sold anything on either of them.
reason why ebay banned nazi stuff is because france banned the selling of it.
sorry i dont have other suggestions.

best of luck with it! personally, i think ebay is wrong for banning historical nazi items. if theyre going to do that, they need to ban hammer and sickle (sp?), confederate items, etc etc
edit to add - here's another gun auction site
http://www.auctionarms.com/