Hi Clive, Welcome to the forum. I don’t know whereabouts you are in the country, but the agricultural/ machinery auctioneers, “ Cheffins “ at Sutton nr Ely in Cambridgeshire have a machinery auction around the beginning of every month, and a “Vintage” auction three times a year. Have a look on their website, there are Howard Gem rotavators regularly offered in various states of repair. They have a catalogue online, usually about a couple of weeks before each sale. I’m sure there are also other auction houses, etc around the country if you look hard enough!