If you go back to the original "ID this frame" thread you'll find a (now hidden) link to a 1983 A-D (actually a Puch) SLE frame that has many matching features, including no panto on the stay caps. It's not conclusive since there are a few differences like the cable routing and number of WB bosses...but it seems to be something along that line, maybe for the EU (or some other) market.
http://chuck.kichline.com/bikes/advn/default.htm
just so we don't go over old ground again:
http://www.bikeforums.net/showthread...t=a-d+puch#top