glev...If the revolver is incorrectly stamped, it does not add to the collector value. However, that being said, there may be some collectors who are interested in mis-stamped guns and may pay a small premium.

Concerning the prototype possibility, the revolver would not be a prototype Model 66 as the first run of this model to test the new tooling was made in 1970 (100 guns were made). Prototypes would have pre-dated this run (if any were made). The gun would not be a prototype Model 19-3 in stainless, since the Model 66 was in full production long before 1976.

Bill