Some of Pacific Western’s B737-200s had a high number of cycles. Well maintained in their service, including engines.
This one I do not know of, some of PW’s first were scrapped. (One is now an artificial reef off the east side of Vancouver Island, not far from the Nanaimo-Comox stretch. I saw it stripped outside a hanger, from a hundred feet away it appeared to have corrosion judging by paint stripping and other artifacts.)