Welcome to the Forum. Don't forget to post the caliber when inquiring about S&Ws since some models, including the K frame Military & Police were made in multiple calibers. These K frame revolvers could be bought in both 32-20 and 38 Special back in the day. Fortunately, the serial number was too high to be a 32-20. Guns around yours were shipped in 1927. It is properly named a 38 Hand Ejector, Military & Police, 4th Change.