Dusty back office find

Found these bottles in Mammoth California at a small liquor store in the back. Clerk didn’t have a single clue about bourbon and they weren’t in the system. Scored them all for 55 a piece.

Weller 12 Weller full proof Eh Taylor Single Barrel Basil Hayden Caribbean reserve Rye (no idea about this bottle)

Is there a way to tell bottle date on these? Curious of how long they had been sitting at the back of that place.