Nice photo indeed!
Let's see, none of the A-2s in the picture have snap closures on the pockets, they all seem to have buttons. According to a Andrew on his ELC Werber 1729 review post on the TFL (
https://www.thefedoralounge.com/threads/elc-1933-werber-made-from-their-new-warhorse-hide.81171/) , Werber's 1729 contract of 1932-33 is the first contract to feature snap closures instead of buttons on the pockets. And according to the A-2 Contract list thread on this forum (
http://www.vintageleatherjackets.org/threads/a2-contract-dates-up-dated.13491/), Werber's 1729 was the second A-2 contract ever awarded, after Security's (Aviation Togs) 1932's 32-485 contract. Is that how you were to able to figure out that the jackets in the picture were Security A-2s, Grant?
In other words, was there one and one contract only (Security's) that featured button closures on the pockets?
This an education form me!!
Security was awarded the second contract for A-2s after P. Goldsmith. No one has conclusively identified one of the 25 from this contract and there are no known surviving examples.
We now know that Werber's first contract was awarded in 1932, 32-6225 for 600 jackets. These jackets may have had buttoned pockets, but as none exist I don't know for sure. Certainly their second contract, 1729 had pocket snaps.
Here is the most up to date list of early orders for A-2s.
31-1897 P. Goldsmith and Sons, 1931 (25)
32-485 Security (Aviation Togs) 1932 (1666)
32-6225 Werber Leather Coat Co 1932 (600)
33-1729 Werber 1932/33 (probably less than 500)
34-518-P Werber 5 Sept, 1933 (Est.170)
36-1112 P Werber 13 Sept.1935 (550)
37-1119-P Werber 11 Sept, 1936 (Est.620)
37-3061 P Aero 1936/37 (probably less than 500)
37-3891 P H.L.B. Corp. 3 March 1937 (375)
38-1711-P Aero 26 Oct 1937 (1,500)