…or at least serialized. From Mike Helms’ excellent site:
Model 1 First Issue Variabts:
“2nd Variant (serial numbers 214 to 1,130): Bayonet latch, and the recoil shield is attached to the frame by a screw and a threaded insert.”
Smith & Wesson Model 1 Variants - Michael Helms
Of the first 1000 Smith & Wesson revolvers manufactured, 45 are known to exist, and this is 36th of these 45. Surely, the survival rate has to be greater than 4.5%, so I think many await discovery.