Right passenger side supply air vent and diffuser of the heating and air conditioning, part number C8SA-19C-677-C or possibly D, with metal mounting bracket, from a 1970 Lincoln Mark III. Check the pictures for condition. I am not sure, but I don't think there was an air control stem/knob with the air diffuser point of termination, vent originally or not. Also, if the round diffuser point of termination is supposed to move freely or not. It does not want to move and may need to be cleaned and lubricated. I am selling this piece as is, no returns or refunds.