Here is a carburetor / mixer that I can’t imagine that you will EVER find. I know of 1 guy that actually made one from pictures because after many years looking he never found one and nobody wanted to take one off their engine for him to copy. This is a glass overflow mixer for an EARLY National engine they style with pendulum governor, this is the earliest style and is in excellent original condition. And even has the original piping. No bad dings or dents, the needle valve operates smoothly. The glass is perfect. The mixer is made of brass, is approx. 6 1/2″ tall 15 1/2″ with the pipes. If you have an early National hit & miss engine missing this mixer, this is probably your one and only chance of finding an original. I have NOT priced it as a giveaway. I priced it according to the Rarity and the excellent condition.