I have a HP 45, soft case, battery charger, power cable (and bad battery module). I believe it is unique in that the person I bought it from in the 70's toured the HP plant and complained that the +, -, *, and / keys were all gray.
They took it from him and installed a blue "-" and an orange "+" key.
Does this make it singularly unique and of any extra value?
Overall the condition is well- used but not broken anywhere, working, and all the keys and instructions on back are very legible.
Thanks,