I just found my old wallet for original NEOS, created on Aug20, 2014. I remember I dumped some quantity there to wait out when the price started to decline, until I completely forgot about them. Is there any chance to swap those for a new coin? How can I check the balance on the wallet? I have DAT file and probably some records on Bittrex, but can't find original windows wallet for private keys pull. Got blockchain files though

Can anyone advise me on this one? Any help is appreciated. Thanks.