Hello:
I have a 12 gauge, AyA boxlock. The barrel rib has the standard AyA Made in Spain. The top of the left barrel is stamped Interarms. Serial number and proof marks place it at 1979 for year of manufacture. I do not believe it to be a DIARM gun based on year of manufacture. 28" barrels, ejectors, DT, English style straight-grip, checkered wood butt with straight-grain wood, silver initial oval. Color-cased frame, engraving pattern similar to current 4/53. Is it a No. 4?
Thank you in advance for any assistance.