Original Vintage 1940s USA Gaucho Shirt
By Dennis, New York.
Rare!
Label reads, ‘Double Decker’.
Amazing vintage 1940s gaucho shirt, featuring rayon gabardine sleeves and collar, attached to a soft, corduroy vest.
The shirt features two shell buttons at cuffs and pointed loop collar.
The vest has a windowpane check design and little chest pocket and ribbed neckline and hem.
This shirt has a water mark to back of one sleeve, a few marks and signs of fade to fabric especially at back collar, corduroy at mid- back is more yellow in hue. 
Measurements
I would estimate this shirt to best fit a Size M but please check measurements given below:
Labeled a vintage XL. 
P- p 25”
Waist (measured flat) 16” (unstretched) to 19” (full stretch) 
Shoulder to Shoulder (edges of vest) 20”
Length 24”
Sleeves 25”