This is a New Genuine Delco Remy D-1859 Coolant Temperature Sending Unit GM# 1993588 for the 1961-195 Buick Special and Skylark and 1961-1965 Oldsmobile F-85 and Cutlass Models among others. This is from a Former Buick Pontiac Dealership Parts Stock. The Vintage Delco Container was Still Sealed until I opened it for the pictures. FREE SHIPPING IN THE US.