I think you've got it wrong Moose,
I have:
a black nosed "G.ZUIKO" 28mm F3.5 lens with serial number 4707xx.
a silver nosed "ZUIKO MC" 35mm F2 with serial number 1003xx
a black nosed "ZUIKO MC" 35mm F2 with serial number 1308xx
I really doubt Olympus made about 400,000 28mm f3.5 lens before making a
multicoated 35mm F2 lens. It seems to me that the "ZUIKO MC" nomenclature
was used on the F2 lenses long before the "G.ZUIKO" nomenclature was dropped
from all of the non-F2 lenses.
The "ZUIKO" nomenclature of the silver nosed 16mm, 50/3.5, and 70-150 seems
to have been used while the "ZUIKO MC" nomenclature was used on F2 lenses,
and while "G.ZUIKO" nomenclature was used on non-F2 wide angle lenses.
I suspect the change from silver nosed to black nosed happened over a very
short period of manufacturing. The change from single coated non-F2 to
multicoated non-F2 probably happened over a fairly long period.
-jeff
----Original Message Follows----
From: Moose <olymoose@xxxxxxxxx>
By unfortunate
coincidence, the folks who designed lenses started multicoating them at
about the same time whoever did the cosmetic design decided to change
the appearance of the lenses. The two events may or may not have have
some common source, but in any case, they were carried out independently
of each other but over roughly the same time period. Thus, most silver
nosed lenses are SC and most black nosed lenses are MC, but there are
significant numbers of MC lenses with silver noses and SC lenses with
black noses produced during the transition period
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