Stuka Stg-1

[ipot]

At the end of the war, german Luftwaffe officer gave this relic to my
relative. I need to know if Wilhelm SELL's (his name is written on the staff) rank was fliegerschütze (gunner), he served in 1, 3, STG-1 squadron.

[ipot]

for answers

Really,anybody do not know the answer?Did not Wilhelm Sell as gunner 1 or 3 STG-1?ipot