I was about to be like "surely you mean the S/390 series" but nope, you are correct! Apparently 3090 came in between the S/370 and S/390 series: https://en.wik

I was about to be like "surely you mean the S/390 series" but nope, you are correct! Apparently 3090 came in between the S/370 and S/390 series: https://en.wikipedia.org/wiki/IBM_3090 https://en.wikipedia.org/wiki/IBM_3090