Stan;
I totally blew it on identifying that old Mossberg. A bell finally rang in my head & I googled it & confirmed. It was a 42MC. Sights were terrible, little sheet metal pieces which folded up & down for the front sight & flipped around on the rear. Had about 4 choices for either, including a peep in the rear which was too far from the eye to be useful. I first fitted it with a Williams 5D peep & a Lyman ivory bead front on a ramp. I could shoot that pretty respectfully but after a couple of years mounted the Bushnell scope & things picked up.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra