Table of case serial numbers and their corresponding years for gold, silver, nickel and steel pocket watches from the Pavel Bure trading house by year of manufacture (1880 – 1917).
The early models of P. Bure's pocket watches were manufactured at the LONGINES factory, their numbering can be checked according to the Longines Serial Number Catalog .
| YEAR OF ISSUE | CASE NUMBER |
| 1880-1887 | 1000 – 9000 |
| 1888 | 9000 – 12000 |
| 1889 | 12,000 – 15,000 |
| 1890 | 15,000 – 18,000 |
| 1891 | 18,000 – 21,000 |
| 1892 | 21,000 – 24,000 |
| 1893 | 24,000 – 27,000 |
| 1894 | 27,000 – 30,000 |
| 1895 | 30,000 – 33,000 |
| 1896 | 33,000 – 36,000 |
| 1897 | 36,000 – 39,000 |
| 1898 | 39,000 – 44,000 |
| 1899 | 44,000 – 49,000 |
| 1900 | 49,000 – 54,000 |
| 1901 | 54,000 – 59,000 |
| 1902 | 59,000 – 69,000 |
| 1903 | 69,000 – 82,000 |
| 1904 | 82,000 – 96,000 |
| 1905 | 96,000 – 110,000 |
| 1906 | 110,000 – 140,000 |
| 1907 – 1908 | 140,000 – 223,000 |
| 1909 | 223,000 – 246,000 |
| 1910 | 246,000 – 266,000 |
| 1911 | 266,000 – 286,000 |
| 1912 | 286,000 – 306,000 |
| 1913 | 306,000 – 345,000 |
| 1914 | 345,000 – 378,000 |
| 1915 | 378,000 – 400,000 |
| 1916 | 400,000 – 420,000 |
| 1917 | 420,000 – 440,000 (up to 490,000) |
When purchasing expensive movements assembled in Switzerland, P. Bure was required to provide the watch with a movement number. Movements delivered from abroad as spare parts (90% of all Bure movements) were assembled in Russia by Russian craftsmen in Bure workshops and numbered according to the table above.
The numbering ended in 1917, as the table was based on the award inscriptions on Bure watches from the Tsarist era. Accordingly, it ended with the revolutionary year, from which watches were no longer officially awarded as rewards.
However, the assembly factory continued to produce watches and later relocated to Riga, where many watches with the serial number 49xxxx can still be found in antique shops today. There was probably a transitional phase from 1919 to the early 1920s, during which the company began producing watches with traditional "PU" movements, but already focused on the European watch market with the "Paul Buhre" signature. Later, in the 1920s, the remaining production and the brand were sold to Switzerland.
Source: german242.com