Vintage Cow Hand Long Sleeved Shirt

My husband and his family used to ride rodeo. This is from their collection. It is from the 1970’s and features pink and yellow roses on the shoulders. It is blue with pearl snaps up front. It has larger collar. Measurements are as follows as it is a form fit shirt. Please see these as I am guessing as medium. Armpit to armpit is 20 1/2” Across shoulders is 17” Across waist is 19”