Look what I found! from the ashes, this is my Targus Stowaway Foldable Keyboard compatible with the Handspring Visor series. I think I bought this in 2001 and used it with a Visor Deluxe wihch I then upgraded to a second hand Visor Prism (with 16-bit color!).
The foldable keyboard was an engineering marvel back in the day and not too many people owned one. Did you own a foldable keyboard for your Palm / Windows Mobile device? I remember this cost around PHP 3,500.00 or so with this particular model tough to get as there weren’t as many Handspring devices compared to Palm in Manila.