Black metal body. Yellow 'EE' markings. This macro lens has no focus mechanism. It was built for use with a bellows, but was used with the 'Auto Helicoid AR' extentsion tube for this test. The specific lens used in this test was manufactured in July of 1973 (code: 3K). The Helicoid was manufactured in December of 1974 (code: 4A).
1973 - 79
Hexanon - C