I am trying to identify a potentially ancient set of flatwound strings. They came installed on a '68 Kay k2b, which was incredible shape, hardly played at all. They are 30.5"-32" scale, almost as pliable as modern ti jazz flats of similar scale, and appear to be slightly narrower gauge. They are shinier than modern ti's or Chromes, except the g string, which is tarnished and a bit stickier in feel. They have no silks, the barrels are very narrow, and there is a white (nylon?) fiber inside the strings. The headstock end has a copper wrap. The surface is very slightly ridged, but still smooth and polished feeling to the touch. Anyway, they play like butter and sound like heaven. I'd love to find out what they are. Thumpy and full, no midrange bump like chromes or tis, but still deliciously vocal. With a mute, they sound incredible. Thanks!