I've bought some string on ****, for relatively little cash, on auction style offerings. One is a set of Gamma Ruff t 16 ga, 1.55 diameter, 37 ft. and another that was sold as "unlabeled prince syn-gut 16. Yes, there is no name imprint on it at all, so who knows what it is and how old it is. plan on stringing a junior's racquet with it and just hope it's not old and brittle. If I bend either, they seem flexible, so the card that came with the Gamma is g on the front, touting the phrase, "Made by irradiation" and on the back after a description of the process at the bottom is a copy-write..of 1989! Coud these be THAT old? has the irradiation actually preserved them so they are still playable? Or will I just have to try them and see what happens..yeah, I suppose!~ I am having a Fischer m-pro no.1 98 strung tomorrow with either that, or some odd 17 ga. string that came with the racquet, bought on **** from a seller in China, that didn't mention the string in the sale. It's sort of purple color, but when I look at it under my 400x-usb microscope ( I just KNEW it would come in handy for something, someday!) and it's actually half brown and half dark blue. No imprint on any of it's length, either. it may be a mono-filament of some kind, but i can't really tell under the microscope, either. If the gamma is still playable, how would mixing 17 ga mains and the gamma 16 on the crosses work? Could the extra wraps on the Gamma that makes it RUFF, cut the finer 17 ga strings faster than if I just used the 17 by itself? The unknown Prince syn-gut 16 has non of the extra wraps, so might it be a better try? I'm looking for a combination of play-ability and longevity. This racquet may or may not be the main racquet I play with, too, but i don't plan on making the stringers here rich.