02-07-2003, 08:21 AM
Hello,
I have a HP-20S with the serial number ID83807111. This is not the numbering scheme of most other HP calculators. I think that "ID" stands for Indonesia. But in which year has this machine been produced? 83 would be to early, so maybe does the 8 mean 1988 or 1998?
Anyone knows how to interpret this number?
Holger