Up for sale is one, Made In England, English Horse Saddle. I googled how to measure it and came up with 15 The brass stirrups look yellow in one pic, but they are just tarnished a little. There are no rips or tears in the leather, just could use to be cleaned and oiled.
The big leather belt measures about 45. I didn't find any branding on it other than the made in England badge that I pictured.
The item came from an estate sale so my knowledge of its history is limited. Please check the pics over well as they are part of the description, And feel free to ask any questions. The item "Vintage Leather English Jockey Horse Saddle Seat Made In England Brass Stirup" is in sale since Tuesday, February 13, 2018. This item is in the category "Sporting Goods\Outdoor Sports\Equestrian\English Saddles & Tack\Saddles". The seller is "toddsandends" and is located in Burlington, Vermont. This item can be shipped to United States.