I have a vintage Psion Series 3 PDA in working order with accessories.
It has 128k of RAM
Included are:
Psion Series 3 PDA and leather case
3 Link RS232 serial interface (connects to both 9-pin and 25-pin serial ports) + communications software (on 3 x 5.25in floppy disks)
Software catalogue and Psiwin for Windows 3.1 user guide.
Thanks for looking