Difference between revisions of "Bausch & Lomb serial numbers"
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− | Until 1942 [[Bausch & Lomb]] used a standard numeric sequence for the [[Serial numbers]] for their lenses. <ref>Sourced from | + | Until 1942 [[Bausch & Lomb]] used a standard numeric sequence for the [[Serial numbers]] for their lenses. <ref>Sourced from [http://forum.mflenses.com/viewtopic.php?t=20524 a discussion thread at mflenses].</ref> |
====Bausch & Lomb until 1942 (numeric)==== | ====Bausch & Lomb until 1942 (numeric)==== |
Revision as of 06:16, 13 November 2018
Until 1942 Bausch & Lomb used a standard numeric sequence for the Serial numbers for their lenses. [1]
Bausch & Lomb until 1942 (numeric)
Serial nº | Year |
1 | 1876 |
150 | 1877 |
350 | 1878 |
800 | 1879 |
1100 | 1880 |
1450 | 1881 |
1750 | 1882 |
2000 | 1883 |
2500 | 1884 |
3000 | 1885 |
3800 | 1886 |
4500 | 1887 |
5300 | 1888 |
6375 | 1889 |
7600 | 1890 |
9200 | 1891 |
10000 | 1892 |
11700 | 1893 |
13900 | 1894 |
17000 | 1895 |
20000 | 1896 |
25000 | 1897 |
28000 | 1898 |
30000 | 1899 |
32000 | 1900 |
33000 | 1901 |
35000 | 1902 |
40000 | 1903 |
45000 | 1904 |
52000 | 1905 |
57000 | 1906 |
63000 | 1907 |
69000 | 1907 |
76000 | 1909 |
82000 | 1910 |
86000 | 1911 |
89000 | 1912 |
95000 | 1913 |
98000 | 1914 |
104000 | 1915 |
110000 | 1916 |
120000 | 1917 |
129000 | 1918 |
135000 | 1919 |
140000 | 1920 |
148000 | 1921 |
155000 | 1922 |
160000 | 1923 |
170000 | 1924 |
175000 | 1924 |
180000 | 1925 |
185000 | 1926 |
190000 | 1926 |
195000 | 1927 |
200000 | 1928 |
205000 | 1929 |
215000 | 1929 |
225000 | 1930 |
230000 | 1931 |
235000 | 1932 |
240000 | 1934 |
244000 | 1935 |
247000 | 1935 |
250000 | 1936 |
260000 | 1937 |
270000 | 1938 |
280000 | 1939 |
290000 | 1940 |
300000 | 1940 |
310000 | 1941 |
320000 | 1942 |
Bausch & Lomb from 1942 (alphanumeric)
From 1942 Bausch & Lomb used an alphanumeric code for the lenses, where the first letter encodes the year and the second letter (apparently) the class of lens
Letter | First Letter (year) | Second Letter (lens class) |
A | 1941 | aerial lens |
B | 1945 | |
C | 1949 | |
D | 1953 | |
E | 1957 | |
F | 1961 | photographic lens |
G | 1963 | |
H | 1959 | |
J | 1955 | |
K | 1951 | |
L | 1947 | |
M | 1943 | |
N | 1962 | |
P | 1958 | |
R | 1954 | |
S | 1950 | lens for survey cameras |
T | 1946 | |
U | 1942 | |
V | 1944 | |
W | 1948 | |
X | 1952 | |
Y | 1956 | |
Z | 1960 |
Notes
- ↑ Sourced from a discussion thread at mflenses.