Shame to see such an old hardware design disappear.
The Dorados of today are still (somewhat) machine code compatible with the Univac Scientific design for the USAF developed from 1959 and which was marketed commercially as the Univac 1107. I don't know of any older machine architecture which is still in use. There were several 1107s active in the UK, including one in the West Country which kept track of the RAF's spare parts, if I remember correctly.
For some years already software machine emulation under Intel has been fast enough to make the economics of the development of new hardware CPUs questionable. I wonder how long IBM will continue to build machines with 360 hardware architecture.