>>Ii have nearly a dozen nikkor lenses, all manual focus, how can i determine when they were made and what series they are? with firearms, the serial numbers can be correlated with year of manufacture and what series/model modification the rifle might be - is this true of nikkor lenses? << Get Moose Peterson's Nikon System Handbook (Amazon will have it). It contains encyclopedic info, specs, history, editorials on all Nikon bodies and lenses. Includes modification dates by serial on all Nikon lenses. Don't leave home without it! ;....patrick
