My first IBM products
My first was probably a Selectric, followed by an 029 card punch (FORTRAN at community college) followed by various 360 and 370 models up to, but not including, the z/Series. I was working for a couple of PCM competitors at the time. I even programmed a 360/20. Resold the 9370 and 9221 as a tape library controller. Touched DOS/VS and MVT, MVS but was into VM up to my elbows. Good times.