Production years on the Model 10 (no dash)?

[policerevolvercollector]

I guess the "Model 10" designation started w/ the advent of model numbers in 1958? When was it changed to 10-1?

 

[CCG]

57 stamping of model #. 59 10-1 intro heavy bbl. 61 10-2 change extractor rod thread on standard bbl. SCSW 4th edition.

 

[JP@AK]

57 stamping of model #.

This may be correct. The decision to use model numbers was made in the summer of 1957. Production of model-stamped guns might have begun before the end of the year. However, there is no known evidence that any model-marked guns actually shipped from the factory until sometime in 1958.

 

[Absalom]

...... However, there is no known evidence that any model-marked guns actually shipped from the factory until sometime in 1958.

And unmarked "pre-" models shipped until 1959. I've got one .

To expand on CCG's post, the Model 10 didn't "change" to the 10-1 as such; the 10-1 was the first Heavy Barrel. The standard-barrel Model 10 no-dash became the 10-2 in 1961 with a minor technical change.

 

[DWalt]

10-1 (1959): Heavy Barrel
10-2 (1961): change extractor rod thread for standard barrel
10-3 (1961): change extractor rod thread for heavy barrel, change front sight width from 1/10" to 1/8"
10-4 (1962): eliminate trigger-guard screw on standard barrel frame
10-5 (1962): change sight width from 1/10" to 1/8" for standard barrel
10-6 (1962): eliminate trigger-guard screw on heavy-barrel frame
10-7 (1977): change gas ring from yoke to cylinder for standard barrel
10-8 (1977): change gas ring from yoke to cylinder for heavy barrel
10-9 (1988): new yoke retention system, radius stud package, floating hand hammer nose bushing for standard barrel
10-10 (1988): new yoke retention system, radius stud package, floating hand hammer nose bushing for heavy barrel
10-11 (1997): MIM hammer/trigger + floating firing pin for standard barrel
10-12 (1997): MIM hammer/trigger + floating firing pin for heavy barrel
10-13 (2002): limited production 1899 commemorative edition
10-14 (2002): internal lock

I have not seen any listings of SNs at which any of these changes occurred. However, it seems fairly certain that the Model 10 yoke stamping began somewhere near C438xxx.