Likely some kind of custom job running a "50-in-1" type bootleg board. All I know is, if I were you I would DEFINITELY scrap that control panel. Square buttons... meh.
Regarding the monitor: If it's running a real CGA monitor (not VGA) you'd need an adapter to use something newer, but in my opinion, I prefer the real thing to a flat panel. That said, if the monitor is mostly running and looks decent enough without too much burn-in, you might just need to do a "cap kit" on the monitor to get it running well again. If you can't handle a soldering iron to do that, depending on the area you live in you might find someone else capable of doing it for you for a reasonable price. Depending on the monitor type, there are kits that for repairing arcade monitors that can be found on eBay. Last time I had this done, it cost less to get it done + the kit than to buy a new/decent LCD.
Sidenote: it was actually PaigeOlliver that did the cap kit for me. Dunno if he still does, but he used to live a few minutes from my house.