Decent scabbards are almost impossible to locate because they were made of leather and often poorly maintained/stored.
New Old Stock or Repro bezels are available as are the lug retention parts. Likely cost as much as the bayo would be worth when refinished.
Original bayos, in decent condition are difficult to locate and expensive when found, you should be able to get $40-$60 for that one online, as it is restorable and would be fine for someone that needs it to complete a rifle with a real issue bayo.
I believe there are also repro bayos out there now??? from which parts could be swapped. The original stamped metal blade has value in itself.