I've just discovered that my HP-11C has the same keys of the HP-12C, with labels upon them to cover the old 12C functions names. The cover-up is perfect, since I never realized it until now (I was looking at the keyboard under a very low angle and against the sun), and still a colleague of mine cannot see the difference.
I don't know if I have to be happy or sad. Is it frequent with HP-11Cs?
Have I got a rare HP-11C or is it cheaper than I thought?
I remember having read about this on Internet, but I cannot find where: can you help me?
-- Antonio