I have one just like yours (AyA Model 37 Super A) The date of manufacture of your gun is between 1960 and 1965. Reference:
http://www.guntex.dk/index.php?id=6&produktet=0205020&aktivkat=1 I will look tonight at mine and let you know exactly where the date codes are located. They are not easy to find, and are not stamped in very deep. I will also post dates of manufacture and get back to you tomorrow on this thread. You can see a photo and specs of your gun at this address. Check on the "Super". The "Augusta" is their top model of O/U and runs about 35K - 40K.
http://www.aya-fineguns.com/ingles/modelos/superpuestas.htm Jim Haynes
