1800s or early-1900s Austrian or Czech tea sets

I inherited these tea sets from my grandparents, who I believe inherited them from previous generations. My grandparents grew up in Vienna, Austria, and their ancestors were from various places in Moravia (now part of the Czech Republic). My grandparents were born in the early 1900s. Both appear to be handpainted; each cup is different. Unfortunately, the green tea set has no identifying marks. (Note that the backside does not have flowers.) The red-bird tea set has a mark on the bottom of the saucers, as shown. Alas, I don't know any more than this. Any advice on vintage/history/value would be appreciated!