And 10 days later it has arrived.Found this old thread, and also this blog on legacy lenses,
Decided I just had to add the 100/2.8 to my collection, can't afford the 100/2 anyway.
Did a search on eBay and found lots and lots of the early E-Zuiko, but no later MC versions. So put in a "saved search" and waited.
Lo and behold, this morning appeared the answer to my prayer, a late model "Zuiko", no MC, and date stamp July 1983. Perfect and a very good price, $119, so I grabbed it. Apologies to anyone else looking for it.
It will be a couple of weeks before it trickles through the mail system to NZ. I'll keep in touch. Coincidentally, the postal route includes a bypass through Portland OR.