|Serial Number||Year of Manufacture|
|17235 - 21999|
|22000 - 25421|
|25422 - 25759|
|25760 - 27762|
|27763 - 28713|
|28714 - 30222|
|30223 - 33026|
|33027 - 38399|
|38400 - 46627|
|46628 - 61609|
|61610 - 76599|
|76600 - 94108|
*Originally Compiled by The Ithaca Gun Co., October 1960.
If the serial number is NOT listed, here, it is NOT in ITHACA GUN COMPANY records. "a few variances in this data will be found".
** LeFever guns numbered under 10000 are built by the old LeFever Arms Company located in Syracuse NY. This company went out of business around 1915
***In 1941 the company reserved blocks of serial numbers for Solid Rib, Skeet and Trap models. The initial sequence of numbers for the Solid Rib was 70000 to 79999. Skeet Model numbers were 80000 - 89999, and the Trap Model numbers were 88000 to 89000. The special sequences for the Solid Rib were abandoned by 1949 when they were included in the General pump listing. The Trap Model was returned to the general listing by 1954 as the Target Grade. The Skeet Grade was discontinued after 1954.
****In 1974, Ithaca tried a design change in the shell stop system, which proved to be faulty. They were reverted back to the original shell stops that year. All these Model 37's had the serial number prefix of 381. Any of these that came to the factory for service were converted back to the original shell stops at no charge.
NOTE: Ithaca introduced interchangeable barrels commencing with serial number 850,000
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