So i have this lens that i really really want to mount to something but I'm having some trouble. So i got this old 60's BBC TV camera that was broken and i couldn't get it to work, i couldn't sell it and i couldn't give it away, so i tossed it. But i kept the lens that was on it because i could feel the potential. It was a 20mm-100mm F1.8 zoom lens in C mount. Now here's the problem, the lens needs to be serviced/ cleaned and the zoom isn't working for some reason but the glass is clean and fungus free. But secondly i don't own a mirrorless camera to use this on, and thirdly I have come to read that there are two C mounts, C and CS and the latter will not work. So my conundrum is this, I want to buy an EP1 because the prices are good and i would like to give a 4/3 try but i don't really want to buy one if i can't use this lens. If anyone could offer me some advice on how to figure out if this thing is CS or C i would be in their debt.