1960s dark blue jacket in an XS size, 19" pit to pit (marked French size 36, equivalent to a 6UK size).
Classic cut with 3 patch pockets, 1 inner pocket. 5 front buttons. Small collar, the pockets are reinforced with extra stitching and they have a satisfying square shape (as opposed to rounded angles as is often the case).
This piece is deadstock but it has had 'one wash'.
 
Further info on sizing here