30s 50s Sleeveless Navy Blue Blouse with 2 Large Breast Pockets and Original Buttons Rockabilly Athletic Clam Diggers by Judy Bond

I probably found this thrifting , back east in the 80's ...that's how long I have had it. The sleeveless openings have a French seam, and there are 4 darts in the front, 2 in back, at the waist. Beautiful plastic or pearl buttons...all original. I have been afraid to damage this, so I have not been wearing it for the last 15 years, just stored it in the dark. The shirt is a dark navy blue. There are no stains, spots, or fade. No flaws other than very slight wear around the arm holes. Collar is in surprisingly good shape, just the slightest wear that is not at all noticeable. I like to wear my collars up, so if you do too, then you will see there is no difference between under the collar, and the shirt, itself. Judy Bond started her blouse company in 1922, so this is probably from the 50's, with a VERY slight chance it could also be from the 30s. This will look awesome with a circle skirt or Capri pants and a wide belt.
Go by measurements only!
Bust: 42"
Waist: 34"
length: 21"
sleeve opening: 16" around
shoulder span: 15. 5