My first HP-35 and a happy end

[jebem]

Thank you, Eddie and Leonid for your comments and help!

Hi, W.B.Grant (William?)
The HP-67 - You have a fantastic machine!
I had one long time ago as a student, great machine, but it is much more complex than the HP-35 and that card reader requires special attention.
I'm sure the HP hardware experts can help on that if required.

Hi, lrdheat,
You are very fortunate to have one complete HP-35 in your possession!
I could only acquire the calculator, the charger (faulty on arrival) and one battery pack (faulty on arrival, case opened and original batteries replaced by someone).

Hi, Aurelio,
Thanks for your comments!
Ah, I see you are chasing the full HP-35 series for your collection.
What a fantastic hobby we have, isn't it?

Meanwhile I have cleaned the 35 keys and the power switch, by leaving them in water for a few hours, and then used soft dish detergent and a tooth brush to remove the dirt.
The top cover received the same treatment, but unfortunately the LED lens is just a little bit scratched and so far I am not in the mood to polish it.




And as a side note concerning the previous owner:

When I was opening the HP-35 calculator back cover, I noticed a metallic label stuck to the side of the battery compartment.
This label has the following information:
"Property of Richard T. Hawkins"

A quick search in the Google machine reveals a number of people with that name.
However, just one fits the typical user profile of such machine, epoch and age, and motivation to put a professional label in their equipment:
Department of Chemistry and Biochemistry Brigham Young University, Provo, UT 84602

Searching just a bit more, I found this obituary:
A retired Brigham Young University organic chemistry professor Richard Thomas Hawkins passed from this mortal existence December 12, 2013, in Orem, Utah, at the age of 84.

And I bought this calculator less than one month ago from a large eBay seller in Salt Lake City, Utah, United States.

Too many coincidences for a random event.
I think I have found the original owner's name. May he rest in peace.
I will take good care of this nice piece of computer history for him.