In the order of £350, depending on condition.
They have been selling for around $400.00 here, IF in excellent, near new condition. In lesser condition for much less.
There are two currently listed on the gun sale web site Gunbroker.com Both are $749. I am looking for one myself
Under trigger
AyA stands for Aguirre & Aranzabal. The 'y' is 'and' in Spanish. AyA shotguns are direct, part-for-part copies of the English Purdey, one of the world's finest shotguns. The last AyA I saw sold was a 12 ga. double, field grade, back in the '70s. It went for about $750. TexasCharley Sears imported the AyA Matador for a time. 20ga will bring more than 12ga, so you can expect $450-$600 depending on condition. sales@countrygunsmith.net
$700-$1400, depending on condition, and grade of shotgun.
I would say $700-$1.000
This gun is often mistaken as a AYA Matador. The Matador was mass produced and does not really compare to the AYA J.C. Higgins Model 100. Very few were made in 1954-55. It was the first gun made by AYA in Eibar Spain for Sears to show the huge American store what a fine Spanish gunmaker could do in 1954. They made this "pilot" gun with all hand polished workings and rust blued barrels. Very fine. They made a BEST boxlock very similar to a Winchester 21 flatside. It sold in the Sears 1954 Christmas catalog for $125. They do sell now (2007-8) for as little as $450 but have sold recently for as much as $1000. They will continue to rise in value as collectors and gunsmiths realize the gun is trully special.
Questions: If this is a side-by-side, are both barrels marked that they are chambered for 12 gauge? Are both chambers clean? Is this gun new? If so, it may be incorrectly manufactured (although this is pretty unlikely).
I bought a 16 ga AYA box lock serial 836##, circa 1955-56. I don't know the model. It's single trigger with selective ejectors, with some minor chasing around the barrels and action. It has obviously been resting in someones closet for years and the action is now soaking in a bath of mineral spirits. The condistion was pretty good and the price reflected the work needed to bring it back to working state. The shotgun was usable as purchased and represented what the market was. I gave 389$
I will assume that this firearm was made by the Spanish firm AYA as they did make a model called the "Matador" from the mid '50's thru the early 1980's. If this is the case it should also, I believe, have either AYA or Aguirre Y Aranzabal stamped on the firearm. The Matador was somewhat of a "knockabout", though quite serviceable, grade of shotgun for AYA. The "Blue Book of Gun Values" gives values of from $200 to $795 depending on the particular grade and condition. I believe these figures may be OK for the low end, my feelings are that a 100% gun would sell for a couple of hundred bucks more at most local gun shops. They were good guns, I almost bought one myself 25 years ago and if my memory is correct the price them was just under $500 for a used, but still quite nice gun.
Impossible to evaluate on the internet without high quality digital pictures and a DETAILED description of ALL markings, stock, sights, box, condition, accessories and papers.