American bridle.
Reverse side of the postcard.
More information
American bridle.
It's called western bridle it used for American-style western riding, this bridle usually does not have a noseband. Many western bridles also lack browbands, sometimes replaced by a "one ear" (variations called "split ear," "shaped ear," and "slip ear") design where a small strap encircles one or both ears to provide extra security to keep the bridle on. Some horse show styles do not have a throatlatch, most working styles do.
The letter is in the reverse of the card:
"How do you like this horse
I should like do how it to
Go for a dream love to all.
From E. Mos."