I purchased my mare 2 years ago: was told she was 13, pre-purchase vet said actually probably later teens, but not yet into her 20s (based on teeth). Our home vets (after I got her home and a second-opinion) said same thing, although we've all been contemplating what breed she might be crossed with. I was told she was a registered quarter horse, but the owners before the lady I bought her from lost her registration paperwork and couldn't remember her registered name.
D is very large (not overly tall, but just large boned?): her bridles have to be bought OS. She is about 16 hands... my husband swears she is an Oldenburg (based on one that he knew), and many people have said "She looks like a warmblood!" Our dentist (another vet) was out yesterday, and used to barrel race and do reining: she said D reminded her a lot of her first horse, who was from working quarter horse bloodlines, but also stressed that working = NOT the same as foundation lines. Anybody have any pics of their "working quarter horse" that I can compare my mare to? Or just some history/stats on "working quarter horses"? Most of the quarter horses I see nowadays have relatively delicate, petite heads, in comparisson with the rest of their body.
PS - I wasn't worried about breed or registration, so the story about the paperwork didn't bother me: I just liked my mare and thought she was beautiful and would be fun to work with.