Thanks, Dave. Merci, Frenchy.
I'll admit that I skimped on details for the slide-out drawers on the left side of the sideboard. The one photo on 1stdibs just didn't give me enough information to work with. It looks as if the drawers have grooved sides, so there is probably a pin in each side of the cabinet that fits in the grooves, but I couldn't be sure. Or maybe there's some sort of sliding guide. I can't tell.
Best,
dh