So, the obverse. Judging by the proximity of the B to the head, and the pointing of the foremost leaf, I'm fairly sure it's not obverse 6.
I don't think it's 4 as I can't see any signature under the bust. That leaves obverse 2 (F20, R12) and obverse 5 (F28, R18). I can't differentiate between them at this level. I expect it to be obverse 2, as if it was F28 one of you buggers would have bought it by now.
Which do you think it is please?