Sbloom, thank you SO MUCH for responding; this is very helpful! I did not know (though, am not surprised to learn) that there are so many little places around the UK putting out saddles; there's probably a good chance this saddle came from a place like that. What you describe and the price...
Is anyone familiar with the saddle brand Tartan (what they sell for new, what they sell for used, popularity of brand, etc.)?
Backstory: a (non-equestrian) friend of mine found a Tartan dressage saddle while cleaning out a house after a relative passed away. He wants to sell it, and being...