1. Model 10-5, 6 shot, no screw on bottom/front of trigger guard, SN D512687 on butt between grips, SW trademark stamped in right side of frame near grips.
2. Model 36, 5 shot, no screw on bottom/front of trigger guard, SN J426072 on butt between grips, SW trademark stamped on left side of frame under cylinder release.
Would like to know any info available.

This should have a prefix, either a C (possible) or D (likely).

And welcome to the Forum!

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Jack
SWCA #2475, SWHF #318

Welcome to the forums from the Wiregrass! I'm with Jack. Your Model 10-5 would almost have to have a 'D' serial number prefix and would have shipped in 1973. Is it a tapered or heavy barrel? This is the venerated .38 Military & Police revolver that S&W has been making since 1899.

The second gun is a Chiefs Special, Model 36, that shipped in 1976-77. Both guns are very popular models.

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Guy
SWHF #474 SWCA LM#2629

Guy
Remember that the -5 is, by definition, a tapered barrel model.

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Jack
SWCA #2475, SWHF #318

Enlighten me, Jack. The heavy barrel Model 10 was introduced at 10-1. So, did the heavy barrel skip 10-4 and 10-5?

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Guy
SWHF #474 SWCA LM#2629

Guy
The Model 10 operated on a different scheme than most models (so did the Model 36). Here's how it went with the M&P:

Model 10 - tapered barrel, as on non-model marked M&Ps
Model 10-1 - introduction of the heavy barrel
Model 10-2 - extractor rod threads changed on tapered barrel
Model 10-3 - extractor rod threads changed on heavy barrel
Model 10-4 - cylinder stop screw eliminated on tapered barrel
Model 10-5 - front sight changed on tapered barrel
Model 10-6 - cylinder stop screw eliminated on heavy barrel
Model 10-7 - gas ring relocated on tapered barrel
Model 10-8 - gas ring relocated on heavy barrel
Model 10-9 - multiple changes on tapered barrel frames
Model 10-10 - multiple changes on heavy barrel frames

So
Models 10, 10-2, 10-4, 10-5, 10-7 and 10-9 all had the tapered barrel.
Models 10-1, 10-3, 10-6, 10-8 and 10-10 all had the heavy barrel.

From 1959 on, there were always tapered and heavy barrel models being built concurrently, each with a different dash number.

Simple, right? Nah!

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Jack
SWCA #2475, SWHF #318

All great info, I've seen that data before..... however, the OP says it's a snub nose, so I'm assuming it's a 2" (maybe a mistake) and I'd be hard pressed to distinguish a M10 2" barrel between tapered and heavy profiles...

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.............SmithNut

Here's a different chart, showing the years...



The weirdness with respect to the even/odd engineering change thing happened in the 61/62 timeframe when the M10-2 (tapered barrel version) morphed into the M10-4 and M10-5 engineering versions, the only thing different with these two was the front sight width, the -4 kept the 1/10" wide sight and the -5 went with the 1/8" front sight.
At this time the M10-3 (heavy barrel version) morphed into the M10-6.
Other than this anomaly, there were mostly always even/odd parallel versions made for the heavy barrel and tapered (standard) barrel versions... The other odd thing is that after the M10-10, the -11, -12 and -14 were all heavy/heavier barrel (no tapered observed, just "less" heavy), the -13 was the M1899 Commemorative model....
Last note - I don't think anyone has produced a -12 yet, to my knowledge... Not sure any were made... (maybe this will pull someone out of the dark and post a -12.. )

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.............SmithNut

It is a D, I dont know how to tell the tapered or heav just am sure it is a snub nose.

Welcome! Good information above from the usual suspects .

In general, if the barrel is the same diameter at the muzzle compared to where it threads into the frame, it would be called "heavy". Just to confuse matters, some S & W revolvers came with an intermediate width barrel that some called heavy, so the untapered version was called a "bull" barrel. Heavy and bull are sometimes used as the same term. Clear as mud .

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Alan
SWCA LM 2023, SWHF 220