A ZM1350 based Four-Letter-Word clock, designed by Peter Hand, which emulates Raymond Weislings original. I’m not sure if the PC boards are still available, and the ZM1350’s are becoming hard to find too. Please email Peter if you want further details.

Raymond Weisling's original Four-Letter-Word clock can be found on his Zetalink website.
Personally, I do NOT recommend ordering anything from Zetalink. You have been warned!