well i hate to say it but i have no idea what the diffrence is. I am a recent collector of doubles but must admit my knowledge is very limited if any at all. I have decided to go a diffrent path than my father that collected winchester lever actions and have just gotten into doubles with some o/u like a winchester 96 and a 101 then the martin and jus recently purchased the davey. i was told buy my dealer that he belived it was scottish or english and around a 20's model. i just know i thought it was a good price for a starter piece everone has to start somewhere. and my pocketbook doesnt allow for a win 21 yet but it will. but any help from you all is greatly appreciated i just love these old guns. and i can not find to many people in there 20's that enjoy looking at them as much as i do.
Just turned 26... got a couple graded foxes and a couple dozen Savage 99's. You're not alone...were just a minority in our generation... I do seriously wonder though if prices will come down in the next 20-30 years due a decrease in collectors... as stated in the post about auction rules... most "young" individuals are interested in black guns, modern pistols, or semi-auto Benellis if they are "really looking for something nice." Most look at a SxS as antiquated... I personally think the antique/ classic car market probably will have more holding power than the firearms... I also foresee more liberal laws regarding guns in the next 30 years.
sorry for the deviation.... I have no idea about British guns but this does seem to be the place to learn and that is why I peruse the forum....