This is a vintage white blazer made by Merchant Uniforms Inc.
This jacket does not have a size tag and measures about a size large.
The jacket measures about 18.25" underarm to underarm, 27" back of the neck to the bottom hem, 16.75" across the waist, 14.5" shoulder to shoulder, 25.25" shoulder to hem, 11" waist to hem, 18.5" hip to hip, and 23.5" shoulder to sleeve opening when laid flat.
The jacket is in good pre-owned condition with a spot stain on the back and stains on the sleeves and lapel.