Earlier this year that I had purchased a 77 "Ompak" with black Dura Ace group. The differences I see are my calipers are black as is the Crane rear derailleur. This bike has a true DA rear mech. Maybe 77 was the transitional year for these?
Of course the drillium isn't thru the chainrings...it's more like dimplium...or divotium...with white paintium.
Just a data point. Nice bike though.
Warren Young Toronto
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>This late 70s Miyata from Cyclo24 in Germany has a nice set of early DuraAce
>parts. It also has a drilled large chainring. Cheap right now too, even with
>the $120 for shipping. Lou Deeter, Orlando FL