NOS AC Delco Rotary vacuum pump for a 1954,1955,1956,1957,1958 Cadillac 331, 365 engine. It has the original box and hardware. The hardware has a little surface rust on them, the pump is in new condition. This was purchased a few years ago from Ted Holcombe who is well known for selling quality NOS Cadillac parts. Sold as-is.