I'm smoking doc's C99 right now as I write. Happy New Year!
I have smoked other "Cindy 99's" like Joey Weeds, which is a cross and nothing like the original. Mosca's seems pretty genuine ( not certain) but is a more Indica pheno than greenthumb's... but still pretty good.
ALL the "elites" I've gotten from Doc Greenthumb have been IMHO genuine and 100 % female as advertised. That includes OG Kush, Bubba Kush, L.A. Pure Kush, U.K. Cheese, Chemdawg and now Cindy. I've NEVER had a delivery problem and have ordered from them many, many times over the DECADES.
Greenthumb's Iranian Short Season autos are the ONLY autos I've ever grown that actually gave me a yield and actually are very potent. EVERY other auto I've grown don't even compare, so please, in the interest of the community don't lie about Greenthumb seeds. they are a good seedbank