The model 12 you have is what they call a Heavy Duck Gun...yours was made in 1954...They are a popular item with a lot of model 12 collectors...of course "original" condition plays a big part in what its worth...in good solid 85/95% condition your heavy duck would be worth in the 450-600 range...add a couple hundred more if it has a 32in barrel [most were 30in].....


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