Acorn Atom keycaps

[Chris_68]

Hello,

I'm looking for a replacement keycap letter C for an Acorn Atom ver 4. It is said to be same key as in ATARI 800 and XL, ordered one and it didn't fit. I now know there are several different types, anyone know which type of key could fit? The dimensions are 18.3x18.3x12.2 with spherical top and it looks very much like some versions for an ATARI, either a replacement key or accurate 3D model.

Here's a link (to your wiki)
wiki/Acorn_Atom

Thank you in advance
/Chris