On the frame and the grip frame.
To answer the question we'll need to know more about this pistol. Is it a revolver or a semiauto? What model and caliber? I found a Colt frontier scout .22 with that serial number made in 1962.
the caliber is stamped on the gun.
1912
1910
1911
1871
2006
what model, caliber. ????????
Caliber should be on the barrel. SN's were not required until 1968
Early 1930s
1972
No such S&W model number.