I have a brass 2-valve refrigeration charging manifold I'd like to put up for sale on craigslist. I bought it in the late 70's or early 80's and have lost track of the manufacturer. The manifold has a 'hallmark' that looks like a 7 with a second 7 inverted next to it. One of the gauges has a sticker saying that it was "Made in Taiwan. It has two sets of hose connections to keep the hoses clean.
1) Does anyone know who made this manifold?2) Is it worth the bother to post it? I has temperature scales for R12, R22 and R502, which should help to date it. Is there still a market for a manifold like this one?
I did not use it many times so it is pretty much unused, but it was a help when I needed it.
Thanks,
baumgrenze