those being Cosina lenses
Well, today I counted up the Zeiss lenses that I 'own'. Turns out I have ~40 of them, ranging in cost from cheaper than a Canon 50mm f/1.4 to double the cost of a Canon 800mm f/5.6L IS. Of course, unlike the Zeiss camera lenses which are OEM'd by Cosina, all of mine are the genuine article, probably put together by some guy named Hans at the factory in Jena.
Sadly, none of them will mount on my 7D - they are all microscope objective lenses...