I'm thinking your box would be a blue, two-piece, Bangor Punta-marked, with the broken silver border on the box lid, and a white stick-on end label on one end with gun particulars hand-written, but no imprinting of model/bbl/finish on opposite end.
As for my Model 30-1s, the '69 box has both a stick-on end label and box imprinting, while my '76 box has the stick-on label only. I would assume exceptions occur, but my recollection is box imprinting of model data was gone by the mid-70s.