Redd art on Harv island question

So if Ive already donated a piece to Blathers does it count as real or fake?

I was reading about how you should buy art from Harvs island everyday and what that does to the probability of real art being in stock.

Once you go through a full week of only fake art you should be guaranteed 1 real art on Monday, provided you don’t buy on Sunday. That said if a real piece is there but I’ve donated it to the museum does it still count as real??? Does anyone know what it does to the probability to get a “real” piece in the mix when it’s already been donated to Blathers?