Before I put it up on ebay, I will offer a discounted price here of $18 delivered domestic US.
This is a very handsome keypad with male and female PS/2 connections and a switch to tell it whether it is via mouse or keyboard port.
It is charcoal gray and Alps-compatible with white legends. I am pretty sure that these are thick ABS lasered and infilled with white. I have not taken it apart, but it appears to be plunger over dome.
This is $1 per cap for some nice ones, even if you throw away the device.
Private message me soon or I will put it up there.