Vintage 1970’s European Chore Jacket

Here’s another mystery one in a rather peculiar build! Heavy cotton, fairly certain denim given the grain but I once again am not sure! Four pockets, two flapped up top and two at the bottom. I think the jacket may be Swiss given the pocket similarities to Swiss military jackets. One exposed button up top, rest are concealed. Large paint/crud mark on the right hip, some fraying towards the bottom button hole closure, bottom pockets and sleeve cuffs but perfectly wearable as is.

 
Tagged size: Missing tag

Measurements

Pit to pit: 21”

Shoulder to cuff: 24”

Collar to tail: 27”