Selling an original Double venture Zenith carburetor made by Holley of Detroit for early Model A Ford cars and trucks over 90 years ago. The bowl casting has a pinned boss on back, raised "H" on top and bottom, and has no feature around drain plug on bottom, indicating very early 1928 production, Top also has a faint "H" on throat, and will run fine on all 4 years of production after restored. It was bead blasted, passages Cleaned and painted judging correct flat black gas proof paint.  Please look at photos closely and feel free to ask questions, only ship to USA address. Credit given for good cores. Note that use of an air filter likely will cause engine to run rich, Ford did not put these on from the factory.