Is it true that you can call Smith & Wesson and they will tell you over the phone when it was shipped? I read this on the forums all the time?
Look for .38 M&P's in the serial number range of 518000 to 560000. This is roughly what was shipping in 1926 based on known ship dates I have. Jack (JP@AK) may have more precise ship data since he tracks this model more closely.
I've been a student of the M&P for awhile.What did you pay (and when) for your .38 Special M & P Model of 1905 revolver?