This is an 80s Olivetti I found in a thrift store and purchased for 10€. Its fully functioning and a pure joy to write on. Just listen to that daisywheel slapping that paper.
All olivetti switches are safe to remove key caps from by just pulling straight up, I use bent paperclips but you can pry them up with a butter knife underneath too. A picture of the switch underneath the key cap would probably be enough for me to identify the switch.
Outstanding IBM board there! Lugables are so cute and having a full powered model F capacitive buckling spring keyboard attached is just gravy!