2 Prestolite VSC-6234G 12 volt negative ground voltage regulators.  They look to be in fairly decent condition.  I have no idea if they are used or not, or if they work.  Therefore, THESE ARE SOLD COMPLETELY AS-IS.    Please use the part number, as well as the photos, including those with measurements, to ensure a proper fit. I found a list of what these are used for supposedly, but I cannot verify that the list is 100% correct. 

Used On:  American Motors (1963-1970) , Barber Greene (1966-1973) , Carrier Transicold (1974-2000) , Deutz (1973-1979) , Ford (1968-1987) , Freightliner (1970-1974) , Gray (1966-1967) , Hardin (1965-1977) , Holmann-Moody (1966-1968) , Huber (1966-1972) , Hyster (1969-1976) , Jacuzzi Jet (1965-1977) , Jeep (1961-1971) , Kenworth (1961-1985) , Massey Ferguson (1972-1984) , New Holland (1972-1986) , Onan (1965-1981) , Palmer (1964-1972) , Starrett (1964-1972) , Steiger (1969-1981) , Teledyne (1966-1967) , Timberjack (1964-1970) , White Industrial (1974-1984) , Yale (1974-1978).