This is probably the first PBY numbered 11-P-12 (VP-11F). Later, PBY-2 BuNo 0454 became VP-11F's 11-P-12. Later still, VP-6F became VP-11 (after a short stint as VP-23) and had at least one PBY-5 as 11-P-12.
13 Apr 37
(Photo from the R.L.Lawson collection, courtesy of the Nat'l Museum of Naval Aviation)