Another good way, sort of a "ballpark" method, is by the barrel steel markings- If this A or AE has Krupp or Krupp Flustahl (fluid steel)barrels, it is most likely an earlier Fox gun-- AH Fox had 4 basic barrel weight stamps- 1 0r 2 stamp on a 12 gauge indicated heavier walled barrels, more gun weight-3 0r 4 (the 4 more often on the lighter 16 and 20 bore Fox guns) would mean lighter barrels, a somewhat lighter weight gun-- Also know that this Fox has 2 & 5/8" chambers, not a real problem with today's available 12 gauge loads-- chokes are best checked with a gauge, even better by patterning-- If this Fox is mechanically sound, locks up tight- I'd go for it- Ejectors and fancier engraving are fine, but don't kill birds- gun fit, balance, chokes, loads used and trigger pull weights do-- You have a great "bargaining chip" with the cut off stock- if you like the gun, and what's not to like about a Fox??- I'd try offering the dealer $750 cash-- citing the butchered buttstock- then send it to Brad Bachelder for proper stock length- I have seen some of his work on buttstock "splicing" and pads- flawless- have him strip and clean the action- and you have one of the best boxlock double guns ever made, way better than a Parker or a Ithaca, IMO-- You'd pay way more than $900 in today's over-inflated Parker [pricing for just a used 12 Trojan, which will weigh 7 & 1/2 lbs. or more with 30" barrels-