This is an original 1963-1964 Chevrolet passenger car wheel. The wheel does not contain the four "nubs" for attaching the original hubcap but has a pair of small nubs stamped in the side just above the valve stem hole (see photo). 1963-1943 had a welded two piece wheel to reduce leaking and production costs and has four large slots for break ventilation. A distinguishing characterisitc with the 1963-1964 wheels is the "groove" or depression that runs along the first drop. It can easily be detected on the inside of the wheel where the tire would be mounted.
For your convenience, we can media blast and prime the wheels at an additional charge.