Vintage circa 1930s -40s French chore jacket.
 
No size or maker's label on this- its a pale grey white and shows all over marks and a few scattered repairs. 
 
Buttons up to the front, mismatched buttons (the top button a more recent replacement), two lower patch pockets and an inner pocket.  
 
Marked throughout with various marks, stains and uneven colour.  Its a pale grey-white as opposed to a bright optical white.  There are marks and stains scattered all over, a repair by the front placket, a repair on the pocket and overstitched repairs at the collar. See photos.  The top button is mismatched. Some edge wear at the pocket and front edges.  Inked numbers inside and the letters 2K are embroidered inside along the with the letter E inside the collar. 
 
Laundered. 

18 1/4" seam to seam across the shoulders at the back
Sleeves are 23 1/2"  from the shoulder seam to the end of the sleeve
From nape to hem is 26 3/4"
21 3/4" across the chest under the arms, the same across the back, measured flat, side to side, pit to pit 
21 1/2" across at approx waist height
23 1/4" across at the bottom edge