UH-----the September 5, 1935 directive I'm looking at treats with making Magna stocks---doesn't seem to instruct their use on .357's.

The only reason this caught my attention is my observation of pre-war Magnums over the years showed both styles in use long after the directive date. That, and the fact that the gentleman who ordered my first year RM (shipped 12/19/35) had originally specified standard grips with adapter, learned about the availability of the Magna's after the fact of his order---and wrote in changing it.

Ralph Tremaine

And the unmarked Magna metal stock circles are the early version---those stamped with the patent dates the later---and I have no idea when the change occurred. I reckon a quick glance at the patent paperwork would more or less answer that question.