A pad that sure looks like the Jostam "Anti-Flinch" but with one less cut out; on a 620 Deluxe. Unfortunately I don't have an image of the markings on the face.
The Jostam Anti-Flinch was made in 5-, 6- and 7-slot sizes.
From 1929 through 1935, the J. Stevens Arms Co. catalogs show their No. 330 double as coming with a Jostam Anti-Flinch recoil pad --
This continued with the No. 530 from 1936 through 1941. Beginning in the 1942 catalog the text says "Stevens Recoil Pad."
Likewise, the first variation Savage Arms Coro. added to their newly acquired Ansley H. Fox shotgun line was their Fox-Sterlingworth Deluxe which featured a Jostam Anti-Flinch recoil pad and twin ivory sights --
All this to show Savage Arms Corp./J. Stevens Arms Co. had large supplies of Jostam Anti-Flinch recoil pads on hand.
Similarly, Ithaca Gun Co. for 1931, offered a spiffy version of their Field Grade with a Hawkins Recoil pad and twin ivory sights --
They did the same with their Lefever Nitro Special and Western Arms Long Range doubles. In 1932 these guns got the Ithaca recoil pad.
