Hi, well to answer your questions in order to the best of my knowledge:
No
No
Final question: They were known to be a maker of low to mid quality guns (Similar to Zabala of today, I could debate this statement as the Zabala guns I have are very good work a day guns, nothing fancy, but very functional - superior to the CZ turk guns, IMO). They were the makers of the the Premier seies of guns in both SL and BL models. They were imported in the 60's and I think the early 70's. These guns look nice and were ok as a rule. They did suffer from the "soft steel" curse of spanish guns at that time. Regardless of what some folks think, spanish steel is some of the best, but the hardening process was much to be desired. This lead to spanish guns of this period to be looked upon as inferior guns and has even carried on to this day.
One must remember that the spanish (and some Italian firms) made/make guns to a price point. If the importer only wants to pay X amount, then thats what you got. Corners would be cut and of course most of the times that ment that the internal parts would suffer (poor hardening, file marks and sloppy fitting) The exterior finish of the gun would lead one to think that it was a quality gun, when in fact it was not. In the case of spanish guns of this period, especially from small makers is the age old good advise of buy the gun, not the name.
I guess the bottom line here is they are ok guns for knocking around and perhaps as a back-up rainy day gun. Just don't expect alot out of these guns. They are worth depending on condition and model about $300 to maybe $600.
Hope this helped you out.
All the best!!
Greg