Hiller Aviation Museum have a 747 flightdeck you can tour. I was lucky enough to have a docent who was one of the plane’s original pilots. I would guess it’s a very early model. The buttons and knobs far outnumber what the newest version has. However, once the docent explained the layout, it became much less confusing (but no less daunting).
If you’re out this way again and have an afternoon, Hiller is worth a visit.