For a brief period of time (I think a couple years at most), after the Ithaca-SKB "divorce", SKB's were brought in under the Mitsui name. Looked the same, minus the Ithaca Raybar front sight. But if yours is marked Ithaca, it would have been a leftover in 77.

The most recent ones (385/485) are indeed more attractive and have choke tubes--but heavier than the Ithaca-era guns.