This is a very nice horse. He is a GREAT example of why it is important to get a smooth coupled horse.. his topline from back to croup is truly perfect and you will note, not a hing of sway back.
He might stand a bit wide at the hocks and he might have hocks that tend to stand behind the point of buttock (hard to see in these photos).
A horse born in 1991 and is 20 years old and looks this good with legs this clean is not a horse you want to knock.
Enjoy him! :)