These are 15/16-20 HS 6Flute GH7 taps, and are what you need to create autococker barrel threads. They are brand new and unused, they read:
LION HS 15/16 - 20N S
I have 2 of these, they are $46.95 + shipping each.
I am open to trades so feel free to make me an offer if you are interested, thanks!