Well that is SIRA naturals that grows the MTF. Can find it all over MA. They reserve the 30% batches for med patients.
As it goes you can find it at the Alaskan cannabis cache, he does have some good seed stock, sinister as @Papalag stated, and ak bean brains as @Northern_Loki stated are all good options. Now @Heritagefarms knows something I think about a old line that might be making a comeback this year, I may just be getting humbled by the plant a few times in the process.
I moved to Alaska for ten years and lived in the Matanuska Valley. This is what the old timers there said as well. No such thing as real MTF anymore only ATF. People there were calling it MTF but that was 20 years ago and u couldn’t guarantee strains just had to go by your dealers word.
Everything AKBB has is the real deal, strong, and darned near unforgettable.
In podcasts he has explained that he’s been saving seeds since the old days of Neville’s bank, and before. They primarily grow indoors up there because of the messed up light schedule in Alaska, as well as climate.
His MTF is real, and also he’s made some interesting crosses with it like Wedding Cake x MTF (Matty Cakes) which is said to improve both.
I highly recommend listening to The Pot Cast episodes with Dave. He’s old school cool.