S&W 1905

Smith & Wesson early K-frame models, identified by caliber/serial number
32/20 Hand Ejector First Model (1899), manufactured 1899-1902, serial numbers 1-5,331.
32/20 Hand Ejector Second Model (1902), manufactured 1902-1903, serial numbers 5,332-9,811.
32/20 Hand Ejector Model 1902 1st change, manufactured 1903-1905, serial numbers 9,812-18,125.
32/20 Hand Ejector Model 1905, manufactured 1905-1906, serial numbers 18,126-22,426.
32/20 Hand Ejector Model 1905 1st change, manufactured 1906-190?*, serial numbers 22,427-33,500*.
* factory records to do show exactly when 1905 1st change ended and 2nd change began.
32/20 Hand Ejector Model 1905 2nd change, manufactured 190?*-1909, serial numbers 33,501*-45,200.
32/20 Hand Ejector Model 1905 3rd change, manufactured 1909-1915, serial numbers 45,201-65,700.
32/20 Hand Ejector Model 1905 4th change, manufactured 1915-1940, serial numbers 65,701-144,684.

.38 Hand Ejector First Model (1899), manufactured 1899-1902, serial numbers 1-20,975.
.38 Hand Ejector 2nd Model (1902), manufactured 1903-1905, serial numbers 20,976-33,803.
.38 Hand Ejector Model 1902 1st change, manufactured 1902-1903, serial numbers 33,804-62,449.
.38 Hand Ejector Model 1905, manufactured 1905-1906, serial numbers 62,450-73,250.
.38 Hand Ejector Model 1905 1st change, manufactured 1906-190?*, serial numbers 73,251-.
* factory records do not show exactly when 1905 1st change ended and 2nd change began.
.38 Hand Ejector Model 1905 2nd change, manufactured 190?-1909*, serial numbers -146,899.
.38 Hand Ejector Model 1905 3rd change, manufactured 1909-1915, serial numbers 146,900-241,703.
.38 Hand Ejector Model 1905 4th change, manufactured 1915-1942, serial numbers 241,703-see notes 1905 4th change.
K-22 1st Model Outdoorsman, 19,500 manufactured 1930-1940, between serial numbers 632,132 - 682,419 in the .38 Hand Ejector series.
K-22 2nd Model Masterpiece, 1,067 manufactured 1940-1942, between serial numbers 682,420 - 696,952 in the .38 Hand Ejector series.
K-32 Hand Ejector First Model, 83 manufactured 1936-1941, between serial numbers 653,388-682,207 in the .38 Hand Ejector series.