"Vault" refers to an Emblem Vault address, meaning Counterparty tokens that have been locked in a "vault" and a corresponding NFT is issued on the Ethereum blockchain. So that's not what that is.

You issued 66,000 divisible tokens in November 2017 -- there's a huge stretch of imagination involved to call these "NFTs" (Non-Fungible Tokens). They're extremely fungible. "Bona-fide NFT" would suggest a 1-of-1, although its true Rare Pepes and SoG are considered NFTs even if the supply is huge or they are divisible.