So I just bought a Parlour Sibyl (1970, b.p. grimaud) off ebay. When it arrived it was missing cards #12 and #21 (The Enemy and Death). The seller refunded my money AND told me to keep the cards... so this is a long shot... but...
Maybe you also have an incomplete deck? Maybe you foolishly used this deck for art as a youngster and now you don't know what to do with the leftover cards? Maybe you just happen to have #12 and #21 lying around? Maybe you have the full deck and you're not attached to it and you're willing to trade for something else? Maybe you would love to make me an Enemy and Death card of the same size and shape and send them to me so I have a complete and usable deck? (I love this idea, actually).
I'm bummed because it's so beautiful and I would read with it all the time if I could. Hoping serendipity happens and I can restore this special deck.
Also if you have ideas of how I may find these cards let me know...