How about a picture of the whole inner fender? do you have a broadcast sheet that came with the car?
Fender tag appears too be in a strange location because of where the washer bottle is. Also no paint on tag, corner not bent and the fonts are a little larger for a Ham. Mi. built.
May be a reproduction tag. No harm no foul if 1. you don't care 2. you have a broadcast sheet too back up what you think the car is. Not slamming your car, 72 340 Dusters are my thing and it looks great. Just trying too help you make sure you got what you got..