Looking around the webz I found this,,,,
Make: Mossberg, Sold Under the New Haven Brand
Model: 679 Carbine (Same as Mossberg Model 472)
Serial Number:
Year of Manufacture: 1972-1986
Caliber: .30-30 Winchester
Action Type: Lever Action with Tubular Magazine
Markings: The left side of the barrel is marked “New Haven / By Mossberg / Made In U.S.A.” and “Model 679 – Cal. 30-30 Win. / North Haven, Connecticut”. The top of the barrel is marked with a circled “P”. The right side of the receiver is marked “1277250”.
Barrel Length: 20”