You are bidding on a used Edelbrock 553 three two barrel intake manifold for 1955-64 Ford Y block V8 engines.  The manifold is in good used condition, with smooth gasket surfaces and good threads in the bolt holes.   The passenger side thermostat housing bolt hole looks a little shaky on the first few threads, but I ran a tap down it and believe that there are still enough good threads for the bolt to tighten down.   It accepts Stromberg and Holley carburetors with the three bolt flange.   Happy bidding!