Mossberg 195K bolt action 12 GA.
At age 18 this was my first firearms purchase and the only one until the 686+ joined it 34 years later.
At that age my funds were just about enough to pay for this "all around" firearm ($49 from Sears and Roebuck), a 1X Weaver scope, swing off mount and installation, a few boxes of rifled slugs and a cleaning kit.
Still have it.