I dunno, guys... I see shelf vents. That tells me bass cab. And are we sure those are twelves and not fifteens? Wasn't there a recent post from a guy who showed a pic of a suspiciously similar 4x15 cab with the grille cloth off and everyone was trying to come up with a part number?
Those aluminum domes with the holes in the middle identify them as cheapo Utahs or the like, and whether marketed as guitar or bass they weren't hitting on much. I'd pass.