I got this shorting cap for my 201SA head. It was a GE part, but it's actually an Area Lighting Research shorting cap. Got it for 5 bucks on the internet. Looks like a China photocell...
I have the same Macintosh keyboard as the one shown in the distance here. Had it since 1993 from my Mac IIci, kept it through four upgrades, now a G-4 with a USB adapter so I can still use it....that's how much I liked the feel of those keyboards.