Welcome to the forum.
The MF 55 is around 50 years old.
It falls in the industrial category as opposed to the agricultural market. In the Ag market, MF keeps a strong parts supply chain for their customers. Not so much on the industrial size as it's such a small, niche market.
You didn't mention price, condition... but I'd be very careful buying something like that. If you can't get parts, you bought scrap steel.