Thank you. I read on a few websites that the pattern you are using with the first two digit serial numbers only works for factory 26. which has caused some confusion in dating the other factories. Any truth to that?
Regarding the "only works for factory /26\ " argument-- what the majority of its proponents seem to overlook is the fact that the
五六式 (56type) stamp is a military designation for a military battle rifle.
With 100+ arsenals producing the Type56 over a 40 year period, it makes absolutely no sense to have 100+ different serial-number-dating formulas for one type of rifle. Consider the M1 Garand-- produced at multiple unconnected facilities but with a system of serialization that followed strict military guidelines. For the Garand, the systematic order was in the specific serial number ranges contracted for each facility. For the Type56, the order is built into the serial formula itself-- which, IMHO, is a better system and conducive to more robust production. Multiple guns made in the same year may have the same serial number, but they are easily distinguished by the individual arsenal stamps.
The way I think of it-- the first year of production is right there on the gun (
19)
56Type. The 2nd-year(1957) thru 25th-year(1980) serials follow suit according to a specific formula.(Allowing some exceptions for the M21's, Letter Rifles, the limited run of DP/DB stamped guns, and the handful of low output arsenals that used the numerical year prefixes 70-76 for guns produced between 1970 and 1976.)
But, even with these exceptions, the
Nth year serial formula applies to well over 95% of the Type56 stamped guns. Though not immediately obvious to outsiders, the information in the Nth year formula is very explicit yet equally simplistic: Year of production + quantitative, chronological number of each gun produced.