Late digger #138

I'm guessing it was built somewhere around the mid to late 80s, by the use of the brakes, style of the front fender, modern tires and the use of steel braided hoses with annodized connecter thingies. Also the use of the catalog bought engraved stuff give it away. And just because of that it has me a bit puzzled, cause I didn't think diggers were popular anymore around that time.