Value of a NOS left side Zenith 40 Tin Carb?

[cudabnu]

I picked up a set of used zenith carbs to rebuild and modify to go onto my 3.0, but the left side had a broken part that I was not sure if it was able to get fixed, I also got a NOS left side carb with the set, and used it as a reference for putting the other carb back together. I was able to repair the used one. What should I ask for the NOS one?