If it is the 1951 game (and I don't know of any other one) these were going for serious cash on eBay about 10 years ago. One of the most sought after woodrails around.
I believe a few went between 10k and 15k fully restored. Of course, they're worth what someone's willing to pay - and the EM market has changed since then.
Either way, I would definitely do some additional research before selling it.