Hoping not to bother anyone for a born on date, I looked at the Ultimate Highway Patrolman thread and found the SN ranges. I assumed that Smith probably made a steady stream of N-sized frames and, depending on the barrels and cylinders that went on those frames, they became 24s, 27s, 28s, 29s, and so on. Is this a safe guess? If so, my 29-2 was made in 1980. It matters for things like assembling the correct and expensive extras (!!!).
Thanks to whoever knows! (N745299)