I purchased an old Apollo turntable (one of the ones with a domed lid that looks like a flying saucer- I think it's from the early 70s), and it came with a cartridge pre-installed. It's the kind that has a tab that allows you to "flip" the cartridge over- one side presumably is for 33s and 45s and the other side is for 78s. The problem is- I don't know which side is intended for which. One side of the tab is blank, the other has an "S" imprinted on it. I know that playing a 33 or 45 with a 78 needle will damage the vinyl, so I'm afraid to use it until I'm sure which is the correct side. I asked the person I bought it from, but he wasn't 100% sure. Anybody know? Thanks in advance!!!!