US WW2 Sweater Mechanic A1 USAAF

In a very good condition, a US WWII sweater mechanic A1, USAAF. This model was used by the USAAF and disappeared in mid-1944. This heavily knitted sweater was also popular outside the USAAF and was widely worn by various other branches. The label in the collar is partially present and has become detached at some point.