Greeny & Duane Allman 1970 session?

[FuzzyPlum]

Definitely agree its more likely to be Danny at the front and Duane at the back. Duane's hair was a bit more wavey at the ends. Also, Danny would have been much more likely to have worn a plain top. Duane would have been more likely to wear a patterned shirt like the guy at the back- possibly even tie-dye.

PS
I'd like to imagine Danny was turned around as he and Duane were particularly playing off each other.