49G NIB - worth opening/using?

[Allen]

I agree with other's comments..

The 49g saved my grade in a graduate-level complex analysis class in 1999 when it was released. The 49g had some CAS functions related to complex integration and such that the (then king) HP48gx could not do.

We still had to show our work for the tests, but having a "backup" way to verify the answers made it much easier to pass!!

The CAS capabilities was met or exceeded with the HP 50g, and with a better keyboard design, etc.. as others have mentioned.

Although I have fond memories of that class ( which I also took with my best friend and roommate) and the 49g, I recently sold the last HP 49g in my collection, and have no plans to re-purchase one.