It's for sale you know where (not by me), Buy it Now, item No. 360716838307.
Such a calculator was briefly discussed here almost ten years ago:
http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv013.cgi?read=42507
It would be interesting to know what Programs 1 and 2 do; I would guess that they had to be keyed in and might no longer be in the machine. Documentation of those programs would be nice to find.