My guesswork on dating some years of Pierce bicycles by their serial numbers. Not written in stone but my best guess based on the few available facts there are in catalogs and the stolen-vehicle reports and averaging available numbers. Just something I did when I was bored. A rough but fast and easy guide for quickly making a rough guess of the date a Buffalo Pierce was manufactured:
1899 no higher than or ending at 52,000
1900 " 62,000
1901 " 72,000
1902 " 82,000
1903 " 92,000
1904 " 102,000
1905 " 112,000
1906 " 122,000
1907 " 132,000
1908 " 142,000
1909 " 152,000
1910 " 162,000
1911 " 172,000
1912 ending with 182,000
1913 " 192,000
1914 " 202,000
1915 " 212,000
1916 " 222,000
1917 " 232,000
1918 " 242,000
After 1918 production was switched to Angola New-York by the Emblem company and the numbers of Emblem's with Pierce badges made per year was probably more or less than at the original Buffalo factory.