the New Naut over NXT Monetary system is the one being airdropped to Agistri
Also i think there's nearly been 3 million Old naut swapped to New Naut so far
Bittrex is going to be trading the New Naut and Poliniex also.
As for Cryptsy not really had any response so they will continue to trade the Old naut till they swap over.
Anybody know which crypto will be given during Agistri airdrop? Nautiluscoin or NXTNAUT? It is unclear when reading september update (only Nautiluscoin name is used). There was also information that "the offical commencement [of coin swap] will be announced via Nautilsucoins Twitter account." - and it still was not.