Looking for: Parts keyboard for chicklet PET (or just a "-" keycap)

[Josh Dersch]

Made good progress with the PET; after fixing the video I got the reset 
circuit humming again (a bad ceramic cap on the 555 trigger circuit) and 
it fired right up after that, much to my surprise. And only 4 of the 18 
6550 RAMs are bad :).  Replaced a few terrible sockets and it's running 
reliably, albeit with only 6K of RAM.

The keyboard on this thing has suffered some abuse; the "-" keycap on 
the numeric keypad has been broken off.  I figure it's a long shot, but 
does anyone happen to have a spare "parts" quality keyboard they'd be 
willing to sacrifice a "-" key from?

Thanks,
Josh