need a matching 1920 carb for my manifold

cudamark said
No, those are casting numbers. The ones you need to I.D. the carb are stamped in it. The early carb (the one one the right in your photo) has the numbers on top between the fuel inlet and the bowl vent. The carb on the left has the number stamped into the verticle surface below the bowl vent valve. I have some later 1920 carbs too if you would rather go that route.

OK I'll look to see if I can find the numbers and get back with you,
just to make sure where I'm looking

here for the older one I saw a ink stamped 159 on this one but that probably not what you need.
View attachment !!159.JPG

and here for the newer style
or on the side I'm not seeing in the picture
View attachment !!!!later.JPG

ummm if you have 2 matching later carbs I'd like to know how much you'd want for a matched set of re-buildable ones with good throttle shafts
that way I can jet em down to work on the manifold and vent them.
thanks