手邊有幾顆 Leica 老鏡,他們的年紀都比我大...

上網找了一些資料,看看他們的年紀有多大!

Serial Number RangeYear of Manufacture
No SN#-156,001<1933
156,001-236,0001934
236,001-284,6001935
284,601-345,0001936
345,001-416,5001937
416,501-490,0001938
490,001-538,5001939
538,501-565,0001940


Serial Number RangeYear of Manufacture
565,001-582,2941941
582,295-593,0001942
593,001-594,8801943
594,881--595,0001944
595,001-601,0001945
601,001-633,0001946
633,001-647,0001947
647,001-682,0001948
682,001-756,0001949
756,000-840,0001950
840,001-950,0001951
950,001-1,051,0001952
1,051,001-1,124,0001953
1,124,001-1,236,0001954
1,236,001-1,333,0001955
1,333,001-1,459,0001956
1,459,001-1,548,0001957
1,548,001-1,645,3001958
1,645,301-1,717,0001959
1,717,001-1,827,0001960
1,827,001-1,913,0001961
1,913,001-1,967,1001962
1,967,101-2,015,7001963
2,015,701-2,077,5001964
2,077,501-2,156,3001965
2,156,301-2,236,5001966
2,236,501-2,254,4001967
2,254,401-2,312,7501968
2,312,751-2,384,7001969
2,384,701-2,468,5001970
2,468,501-2,503,1001971
2,503,101-2,556,5001972
2,556,501-2,663,4001973
2,663,401-2,731,9001974
2,731,901-2,761,1001975
2,761,101-2,809,4001976
2,809,401-2,880,6001977
2,880,601-2,967,2501978
2,967,251-3,013,6501979
3,013,651-3,087,0001980
3,087,001-3,160,5001981
3,160,501-3,249,1001982
3,249,101-3,294,9001983
3,294,901-3,346,2001984
3,346,201-3,383,2001985
3,383,201-3,422,8901986
3,422,891-3,455,8701987
3,455,871-3,478,9001988
3,478,901-3,503,1501989
3,503,151-3,540,4671990
3,540,468-3,583,8301991
3,583,831-3,610,6791992
3,610,680-3,644,4751993
3,644,476-3,677,0301994
3,677,031-3,730,2901995
3,730,290-4,000,0001996-Present


據說,準確率約為 99%,例外及誤差是一定會有的...

資料來源:
http://www.kbcamera.com/lensdates.htm