RidingAroundCT unfortunately my eyes are not good enough to do a proper evaluation of thumbnail sized pictures. The best I can tell you is to confirm it is a Suntour Accu Shift model freewheel. In one photo it appears to be rusty. How does it feel when you spin the sprockets? Smooth, gritty, stiff, catches in places?
I would service and preserve your freewheel. Searching ebay only finds two Accu Shift 6-speed freewheels, and both are pricey. Most Accu Shift freewheels that I've worked on were 7-speed models.