Now the lightbulb is lit up over my head: one of the first man made progressions..... agreed, pretty cool.
Originally Posted by sharptonn
They got them sharp and kept them that way long before Nortons, Naniwas and Shaptons. This combo was obviously one of the first man-made progressions. Pretty cool you guys have taken the time to rediscover it. Basically all I did/had as starting out!