After doing the simple job of installing the five tiles as a nice little backsplash behind the deep sink vanity in the mudroom, I decided to do a quick search using images.google.com with the keywords "antique dutch tiles". A bunch of images came up, and seeing a photograph including several similar tiles, I was astonished to find they sell for between $60 and $120 a piece on the used market. As Michel Buble said recently, "Holy Shitballs"! I now have a four hundred dollar tile backsplash, according the the person who added the comment on my first post on these tiles!
I might add three more of these in a partial second row above the first, without having any duplicates show up, and then decide what to do with the rest. There are about eight more similar to these shown here, a half dozen in blue with flowers, and three larger scenes without the circles, as well as twenty blank ones. I think I might save the six blue ones when I redo the upstairs bathroom, and then sell off the rest.