Seen some in a bit worse shape than yours with opening bids in the $240-$250 range on Fleabay and better condition ones like yours starting starting around $300. Actual worth as always will end up being whatever someone is willing to pay for one.
And advanced search on Fleabay for sold ones will at least give you a ballpark of what bidders have been willing to pay for one and maybe give you an idea of what tp possibly ask for yours should you decide to.