A little while ago The Essence of Tea had these white Dehua gongdaobei's for sale. I’m posting the photo below with David’s blessing.
https://essenceoftea.com/collections/po ... gongdaobei
I had meant to buy one as I’ve been looking for a simple porcelain fairness cup like this, but I waited too long, and they were out of stock before I could.
I thought perhaps I’d post here in case anyone has one they might consider selling. In good condition I’d be happy to pay the original price and perhaps a bit more, and would also be open to a tea/teaware swap of some kind.
So let me know here or send me a PM – it seems a slight chance but I thought there no harm in asking.