Vintage 1940s Penneys Work Shirt SZ M

Vintage 1940s Penneys work shirt. No info/size tag, but feels like 100% cotton, and measures out to a medium. Missing bottom button, a couple of the buttons were replaced, repairs on both sleeves, light wear on the cuffs/collar, minor staining here and there, and a small hole near the right shoulder, but overall in good vintage condition. 

Marked Size: N/A (Fits M)
Chest: 42"
Sleeves: 25"
Shoulders: 16"
Length: 31"

Item is for sale at Barn Owl Vintage Goods in Georgetown. Seattle's Home for Vintage Work Shirts!  Every attempt has been made to document every flaw, but we are, alas, human so there exists the possibility we have not gotten everything.  All sales are final.  No refunds or exchanges.