This is an extremely hard to find original Carter FO updraft brass carburetor.  These were used on some Bush, Dort, and Piedmont cars, and possibly some other engines.  Please do your homework to be sure it fits your application.  It is nearly all brass and is in excellent condition with no cracks, breaks, or repairs of any kind that I can see or know of except for the drain valve on the bottom.  It is fresh from an old service garage where it lived in retirement for decades.  Everything moves as it should and there is very little wear on the throttle shaft or on the choke shaft.  It mounts with two holes 2 1/4 inches apart on center.  The hole where it mounts is 15/16 inches in diameter.  The intake hole is about 1 1/4 inches in diameter.  These original Carter brass carburetors are exceedingly tough to find in the wild or even at swap meets so if you've been looking for one for an authentic restoration here's a very nice one.  Let the pictures be your guide.  I can always be reached at 262 573 193 1 if you'd like to talk about it.  Good Luck.