how much is a bavarian cup and saucer worth from the XXTH CENTURY?

Answer 1

Depends on a lot of factors - the actual age of the cup and saucer, the condition it's in, what type of decoration was used, how many were originally made in that pattern. It's my experience that cups and saucers normally don't command a high price unless there's something very special about them and they are in mint condition. If you are selling it on E-bay you might make $10 to $30 US. If you sell it to an antique dealer, count on getting about a third of that.

Answer 2

Mainly it depends on what a collector is willing to pay. Other factors would be condition (chips?), pattern, color, gold trim, special marks, etc.