Found this bottle and not sure about it Any Ideas?

[cowseatmaize]

The guy I am working with had a buddy of his look at it and he was sayin that it wasnt worth nething and that it was a repro from the bicent. of 1976. Then he proceeded to offer me $40 for it

If the guys bud was a dealer/collector that may have been a fair offer in uncleaned and and not thoroughly examined for condition. May have been a bit of a gamble really. Saying it was bicentennial is just dumb unless he meant centennial.
Nice looking flask all cleaned up so I'm glad you kept it.