Brand new carburetor, not rebuilt,
1950-1956 Chevrolet 235 w/ POWERGLIDE
Vintage ROCHESTER 1-BRL CARBURETOR #7003536 
used on 1952 to 1956 Chevrolets with 235 ci. 6 Cylinder engines and POWERGLIDE  TRANSMISSIONS. 
It has a automatic Choke. It may fit other applications, as well.