was browsing the web for interesting palmtop related websites this evening, and i ran across the following page:
http://jimmyauw.com/2012/06/19/restoring-vintage-gear-hp-palmtop-200lx/
have a look at the pictures halfway down (or thereabouts) and you'll see a 200LX bearing the following writing on the escutcheon around the screen:
"Palmtop PC. 2MB RAM / DS", and to the right a logo for 'American International Assurance'.
the printing all seems HP original, and i can hardly imagine any company producing their own version that contains the HP logo. other photos show a 32MHz clock crystal fitted quite professionally, and makes me wonder if HP ever produced a factory-fitted doublespeed version of the 200LX for specific customers. could the machine also have a version of the firmware tweaked for the different clock rate, without need for using a driver?