This is a Collins RCR-650 ADF receiver (Part Number 622-2091-001) as removed from our C-182 when we upgraded to a Garmin 750.  Also included are two King KI227 ADF Indicators (Part Number 066-3063-00) – the first removed from the C182 and the second that came out of an Aztec that we also refurbished.

The ADF comes with its mounting can and the indicators come with a single connector.  The unit was working fine when it was removed from the aircraft but it is sold AS IS.  Good luck bidding!