Researcher, thanks. I was observing the earliest dates a particular pad shows up in my general catalogs. The Ithaca pad appears in the Burkhardt [sp?] first in 1937. Later, also in Stoegers. I guess I am not aware of another gunmaker with it's "own" recoil pad. Prior to their own pad, Ithaca offered rubber pads that resembled a Jostam and also some solid pad.

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