[Ron Wood]

The estimated figure of 25,000 stated in Still constitutes the total production of the 1908 First Issue military representing the production years of 1908 and 1909 inclusive. According to Still, the highest serial number reported for 1908 First Issue Lugers is 4828b, hence the 25,000 estimation (this assumes that the serial number range might have run up to 5000b). If we assume that the production rate was pretty consistent over both years (a gross over simplification) that would make the serial number range for 1908 run from 1 to 2500a, and 1909 production would run from 2501a to 5000b. Following that rather tenuous line of thinking, that would make #810b the 8310th Luger produced in 1909

Serial numbering during the first four years of production can be confusing. From 1908 through 1911 the numbering continued sequentially from 1 through the f-block, with considerable overlaps in the suffixes between the production years from 1909 to 1911 (i.e. 1909 and 1910 overlap in the b-block, and 1910 and 1911 overlap in the c-, d- and e-blocks). Setting the serial numbering back to 1 at the beginning of the production year apparently did not occur until 1912.