OWD,
One of the things that has always been of interest is why the Spanish have never built a true self-opening gun. Terry Wieland explains that the only true self-opening gun ever built in Spain was the AyA Senior. We have pictures of that gun and know that it exists. However, it has been rumored for a long time that Ugartechea also built a self-opener on the Beesley action. Supposedly Purdey sued both AyA and Ugartechea for making guns with a Beesley action and won. The court order against Ugartechea, again according to the legend, demanded that the recall and destroy all the guns built on a the Beesley action in imitation of Purdey. After years of rumor, finally a poster has run across a Ugartechea which appears to have a self-opening system like a Beesley. The gun is question is in these three pictures:
Recently this subject has been clarified and there is more information that might interest you in:
http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=479303&page=3
