I just picked up a 1987 586. It's got the original wood grips that have never been worn. Very pristine. Looks like it's never been in a holster. I forgot what dash number ( in California so got a while before I get it home. I noticed a curious marking on the crane next to the serial number: C21. What's that signify?

Take off the stocks and you'll see all kinds of symbols, markings, and numbers. They're called "fitter marks" and "assembly numbers".

You should see the same assembly number on the frame, the yoke, and the back of the side plate. These three parts are fitted together and matched very early in the production process. They are marked to prevent them from becoming separated as they move from station to station during assembly.

The precise meaning of the fitter marks are unknown to collectors, but it is thought they signify various QA tests and inspection points. For example, some of the symbols on the grip frame to me look like they were put their during the hammer forging process. A certain mark might indicate a particular machine or die.

The fitter marks and assembly numbers were meaningful during the brief moment in time when the gun was being made. They were not unique to any one gun as the same symbols, marks, and numbers were used over and over again.

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~ S&W aficionado in training ~

Congrats on picking up a fine Smith! My 586 is a no dash 4" from 1983. If you plan on shooting it quite a bit, you may want a set of extra grips for it. I tend to take off originals, and save. I do replace with wood. My 586 is wearing an old set of Herrett's that were off a NYPD Officer's weapon. Cost was minimal, and great comfort. Make sure you post pics when you get it! Bob

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