This collar will need some additional cleaning if being used for inside decor.  What appears to be loose threads on the inside of this is actually horse hair which will need to be pulled out.  The leather is soft and pliable yet and there are no major scuffs, cuts, or holes in it.  If your intention is to use it as intended, it is strong and sturdy enough for this.  

It measures 23" from the inside top to inside bottom.  Back side, outside to outside is 26 1/2".  
Inside to inside opening is 9" wide, back side outside to outside is 21 1/4" wide.  
And it is 5" thick.  

Add a touch of rustic charm to your living space with this Antique Primitive Leather Horse Collar. The 23" collar is made of genuine leather and features a classic black color that complements any décor. Dating back to the 1800s, this piece is a true vintage treasure that will add character and a sense of history to any collection. This horse collar is perfect for those who appreciate the country-style aesthetic and love collecting unique antiques. It was listed by a trusted dealer or reseller and is unsigned.