.32 Single Action (Model No.1-1/2 Single Action)
Manufactured 1878-1892
Serial Numbers 1 - 97574
Barrel lengths of 3-1/2" are most common, 3" are not rare, 6", 8" & 10" rare.
According to Neal & Jinks book, revolvers before about serial number 6580 were equipped with an eccentric mainspring strain screw mounted under the grips. Somewhere between serial numbers 6559 and 6603 the company returned to the more standard strain screw mounted in the front strap. The change was made in May of 1878.
1st photo:
Top: 3" barrel, serial no. 13443, external standard strain screw.
Second: 3-1/2" barrel, serial no. 144, internal eccentric strain screw, shipped April 1878.
Third: 3-1/2" barrel, serial no. 7692, internal eccentric strain screw, shipped Sept. 1878. As of Sept. 2013, Roy Jinks stated this is the highest serial number known for having the internal eccentric strain screw.
Fourth: 6" barrel, serial number 96761,
external standard strain screw.
2nd Photo shows the external standard strain screw & the internal eccentric strain screw.
Dave