How do you sell 1953A and 1953B 2 bills?

You might be able to find a buyer on eBay or a similar site, but it may not be worth the effort if the bills show any significant amount of wear. As of 06/2013, a worn '53A or '53B $2 bill would retail for roughly $2.50. But if you're lucky enough to have some nice ones with only minimal wear they might bring around $5.50 retail.