I don't think bumping this post every couple of days is going to help you find this pickup any faster. This is a fairly slow-moving forum and you won't get many eyes on your posts here. Interestingly, most people here, while big SD fans, are not pickup "collectors".
As someone who has bought/sold a ton of older Duncan pickups and been trading on here for ~16 years now, I can tell you that you'll probably have much better luck just keeping an eye out on Reverb/eBay. I would recommend setting up saved searches for terms like "APH1BJ", "vintage APH", and "vintage Duncan Alnico Pro". Eventually you might get a hit...
Good luck!