I would say without knowing the actual age and maker you are looking at about $50.00 in value. At first I thought it may be a Talavera style pottery, but that would be Mexican pottery. However since you are in Holland and the art really look European, I would have to forgo that conculsion. Overall this could prove to be hard to pinpoint the maker and actual age, and could very well be Folk art in nature. I too am curious about the design on the bottom, could this possibly be a clue to the maker? It appears to have another art on the back, which I find a bit unusual, maybe a hallmark or was a attempt at another piece of Art. All in all this is a wonderful piece and thanks for posting, hopefully someone can fill in the blanks.