FWIW; Goins Encyclopedia Of Cutlery Markings, 1998 edition, lists the following tang stamps in several variations:
S. & R. CO. 1902 - 1905
SEARS ROEBUCK & CO. 1902 - 1905
SEARS ROEBUCK & CO. (curved marking) 1902 - 1905. "Naponoch Knife Co. Napanoch, N.Y." marked on the back of all tangs.
WILBERT CUTLERY CO. circa 1908 - 1921
STA-SHARP circa 1927 - 1941
CRAFTSMAN copyrighted 1928
Even though he stated 1928 as a start date for Craftsman, Goins dates the CRAFTSMAN tang stamps as 1941 to present (1998, time of publication).
He also stated that some knives were marked Schrade-Walden N.Y. USA on the tangs, but "CRAFTSMAN" on the knife's shield.
So, you can just collect Craftsman knives that would date from 1941 to now. Or, you could expand your collection all the way back to 1902.
That's about all I have folks. Ta Done.
Forged on the anvil of discipline.
The Few. The Proud.
This country has become more about sub-groups than about it's unity as a nation.
"The #72 pattern has got to be pretty close to the perfect knife."
--T.J. Murphy 2012