Recent Vintage Estate Find. This is a 661st Tank Destroyer Battalion Snapback Hat, it is part of a recently acquired collection of Militaria. This hat does not appear to be worn and it is in good condition but the bill is not completely rigid which is not unusual for vintage hats but it is still wearable and will still display nicely, it shows some storage soiling. We professionally and skillfully package all of our items for a safe and reliable shipping experience. Please look at all the pictures carefully and ask any questions before making your purchase.