Scraper for Ugolini & C miniGel L4

I have recently inherited a "Ugolini & C miniGel L4" gelato or ice cream maker that my mother bought in the early 1980s (Williams and Sonoma began importing this model in 1979 but stopped sometime in the 1900s). This machine includes a plastic (or plastic-like) scraper that needs to be replaced. Where can I get replacements for this part?

(My father also has this model ice cream maker, but tells me the only sources he knows stopped carrying these in the early 2000s. He says he would be using his, except he needs the blades as well.)