Hi,
I'm rather new inhere.
I've got into my garage an IBM 5120 machine with his printer and an external
diskette unit with 8 inch flops.
I've got also all documentation and technical documentation of it together
with all operation disks.
It's running on APL (A Program Language) and it is working.
Does someone know if this is a machine that is worth something?
Yes. (Credit to Eric Smith for this succinct response.)