Insole measurement is 10",so according to size chart from Frye.It makes the size 9-1/2" normal width B 
No other tags or markings found.
Unevenly ,worn heels. re-stacked is need.Give them a TLC,but you will have this great pair of vintage boots for a long time!
Minus the heel work these are in great condition!

These vintage Frye cowboy boots in a women's size 9.5B are a classic western style with a low block heel. The boots are brown leather with a solid pattern. The toe is a round shape, and the insole, lining, and outsole are all leather. The upper material is also leather. They are a pre-owned item in "good" condition, with wear from normal use. The listing notes "excessive/uneven heel wear," which should be disclosed to prevent returns and earn better feedback. The boots are a size 9.5B, which is a standard width, and the webpage lists Frye Campus as a suggested product line. 
Additional Details:
The boots are a pull-on style, with a tall shaft that goes to at least mid-calf and a low, angled heel. Vintage Frye boots are known for their high-quality leather that softens and molds to the foot over time. While vintage sizing can be tricky, Frye boots often run true to size. The original leather sole and stacked leather heel layers are signs of authenticity and quality craftsmanship. 

Vintage Western Boots
Frye Campus
Made in USA
Leather Cowgirl Boots
Boho, Hippie, Rodeo
Western Riding Boots