Help identifying a switch

[fabiodl]

Have you ever seen this switch, or can you recognize the manufacturer?
This is found in sega saturn pads (thus around 1995)

The first pic (top, left) shows the only marking it has (besides 2A on the plastic) which may be a logo.
it looks like a very stylized　ア　but it's so odd I am probably way off.
the stem had diameter of 4.65mm
the body is 7mm x 7mm
None of the pics here at digikey seem to match