Edit: @hibachifinal ID’d these as Namco pushbuttons from the Consolette series candy cabs. I’ll leave my posts stand for context.
So I bought these thinking they were PS-14-GX buttons, but they seem to be Sanwa-- hard to say… the button nuts are Sanwa branded, though I’ve never seen white ones. I suppose they could’ve been swapped. My guess is these are from the late 80s. I bought them as NOS, and they are pretty clean, plenty of shelf-wear though.
The switch is labeled M-T and looks very similar to the G1-series switches. It is also a reed-style switch.
Pretty amazing to find new Japanese arcade parts that are this old!