Yeah. It looks like this was put together piece by piece. What you have here is an Ody v1 mouthpiece, V2 mouthpiece top cap, V1/V2 Top Cap, V1 Ceramic Housing Assy with V1 ceramic, Kir Fanis
tank and GG Base.
I read the classified ad and it doesn't mention anything about a 510 base so you can't argue the seller about that. But it was advertised as having a V2 ceramic which is false since the housing is V1 and a V2 ceramic will not fit because a V2 only has a single slot in the ceramic.
Get a refund. Good luck!
Edit: It also has a V1 centerpin with a slot.