Does anyone know of a source for the drivebelt for a set of '70's Cortina rollers, imported by Mel Pinto?

I'm currently housebound, probably for a great deal of the future. My wife suffered a stroke two and a half weeks ago, and she's just come home from the hospital. While home, she can't be left alone, which means I'm very grateful that my job volunteered that I could telecommute - but I won't be getting a bike out on the road for the immediate future, probably the rest of this year unless someone (mainly my sister-in-law) is over to wife-sit.

I was offered a set of rollers by a vintage motorcycle collecting friend of mine (dual background, bicycles and motorcycles, although he only rides the latter anymore), and to my amusement discovered they're the same model Cortina's that I used during the Erie winters of the 1970's. Having sat in an attic for the last 25 years, I'm not expecting the rubber belt to last too much longer.

I never liked rollers, like trainers even less, but not being able to ride at all makes the former alternative a lot more palatable.