I was looking at the holochess table in the ESB main hold and it has some details that are different than the ANH version. ESB has these big white rectangular greebles, instead of the silver knobs on ANH. In fact they're still present on the table that's on display at disney studios
Slots version on Empire
then I was looking closer at the bits and realized they looked like upside down rocker switches
that are standard all over the Falcon
when I put the rockers I'd already built into place they fit perfectly.
the bottom of them, if they are rockers, look pretty manufactured to me. I know that a bunch of the rockers in the real props are just painted wood, but at some point it was theorized they were based on something else, some other found part. Maybe seeing the bottom of them will jog someone's memory?