Congrats on the find. Does it say Model 156 on the frame ? Or is that what is on the box? I was not aware that they(Huntsman) had a Model # designation. Both my 58's just say Huntsman on the frame . But that means I got 2 Model156 58 Huntsman's a Model 157 22 Hornet and a Model 158 22 Magnum Remington Jet. I wonder if the 12ga and the 45 are Model 156? Just more fun facts for referance.
Not only fun facts but also confusion yours is a Model 156 with AL= 1973. Mine are AJ=1971 and AL=1973. My Model 157 is a BB=1986 and the Model 158 Jet is a Z=1963 seems Model designation #'s have little to do with yr of manufacture?? Kurt