Evaluators Ltd. was a S&W distributor & supplied military,CIA,FBI & other
like minded individuals with firearms,holsters & related items.Some other members,likely Tulsa bound at the present, may weigh in with more info.
Your M 19 is outstanding-congratulations.The holster shown was made by Heiser-Evaluators sold Heiser & Berns Martin holsters marked with their stamp & frequently marked "Quick Draw".I have a S&W All Models circular stamped
Evaluators Ltd. & a number of holsters bearing their imprint.I also have a copy of a file of US Navy trials conducted in the 1950's evaluating revolvers & holsters for pilots' survival use-Evaluators Ltd. provided the revolvers & holsters for the trial & a fellow SWCA member is to be thanked for sharing the file with me.
Evaluators Ltd. was a fascinating quasi-military/spook outfitter-the sticker is unusual & I would prize it if it were mine,especially wrapped around a box with that .357 in it.
Regards,
John Witty
turnerriver
SWCA # 1426
NRA Endowment Life member

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turnerriver