Interesting accessory that came with the Royal Century...Not mine...but neat to know they might be out there....
Don't be tempted by the Century running on SGW.Initially it looks like the "L" key-top is missing.But zooming in on a couple of photos shows the type-bar under the key-top is missing as well.Hard to type a letter without an L....https://shopgoodwill.com/item/227854856