Great! Thanks for the info. S188xxx would be a fairly early model-marked revolver. Maybe it isn't a "rare bird" but it definitely has the "cool factor." 
Note: The four screw .357 Magnum/Model 27 was made from 1956 until c. 1961.
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Jack
SWCA #2475, SWHF #318
Last edited by JP@AK; 11-26-2020 at 01:03 PM.
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