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#author("2024-06-14T22:44:32+01:00","default:admin","admin")
#author("2024-06-24T21:51:12+01:00","default:admin","admin")
Case: [[Tungsten carbide]] 

Dial: Onyx

Cal [[510]]

*Examples [#gb3d32de]
-Hitachi LSI CMOS signed "7E4 841" for 4th week of May 1977
-Quartz signed "NDK 75F" [presume for May 1977]