You are bidding on a Holley Model 4150 four-barrel carburetor, stamped P/N # D4TE-9510-ANA or LIST-6820, date code 391.  This model has a governor and was installed on a 1974 Ford heavy truck; it may fit several years and models; please check your application carefully before bidding.  It is used; nothing is seized, it will need a rebuild; sold for parts or professional rebuild.  Shipping is FREE for USA 48 states ONLY.