Vintage Chinese Japanese Eggshell Porcelain Teacup / Saucers - Bird /Flowers - 5

Description

Vintage Chinese or Japanese Eggshell Porcelain Teacup / Saucers - Bird /Flowers - set of 5.
I apologize that I'm not knowledgeable in oriental vintage / antique items but I did deal in high end glass for years and I feel these fall into that category.
They are extremely delicate and thin and lovely detailing of a variety of birds and flowers.
They are NOT lithophane.
I believe it was would be referred to as the eggshell china.
The cups are 2.5" tall with a 3 inch diameter.
The saucers are just under 5.5" diameter and are all marked but I can't interpret what the marking means.
All items are free of chips and cracks but 1 tea cup has 2 little brown spots.
All sales are final so please ask questions before bidding.