this Massey Ferguson Ski Whiz 500 SST seems to have hibernated a lot... it's in pretty good shape, and still has it's original cover

 

It's going for about 1600 at https://bid.aumannauctions.com/lot-details/index/catalog/29886/lot/4621764?url=%2Fauctions%2Fcatalog%2Fid%2F29886%2F