Today I received a package in the mail from a Dutch ex-IBM service technician I got to know through an advert for some golfball font elements. The package contained 9 different fonts for my Selectric, a special golfball with squares used for alignment of the machine, some spare parts, and a lot of original IBM tools for servicing the Selectrics. What a wonderful thing to receive!
The keys that look like regular Hex (or Allen) Keys, are something special, as they have grooves; I believe these are Bristol wrenches. They fit the various set screws in the Selectric. The round white boxes contain tilt and rotate tapes; unfortunately they do not contain the particular rotate tape I need right now.