I haven't seen a "new" HP in a long time
but I can tell you as somebody who
bought a new HP-67 around 1981 that quality started dropping with the LCD
models. I remember the HP-41 had come out just as I decided on my 67. I
The HP9810 (1972) is not as well made IMHO as the HP9100 (1967). The
latte has a cse made from 2 aluminium alloy castings, the former is 2
side castings riveted to a sheet matal base, etc. It's not as solid.
On the other hand, the 9800s iare an order of magnitude better made than
suff made today.
-tony