I always look up for them in brocantes, vides-greniers and online, but they are rarely cheap. This one wasn't cheap either but I knew it was unique enough (purple polka dots) for me to make a profit. I paid around 15$ for it. It took me some times to list it, but once it was it sold very fast!
Here's the precious:
|My beautiful café au lait bowl went to japan!|
|Polka dots coffee bowl|
|Some little flea bites|
|Some more flea bites|
If it's unique enough it will sell. If you spot cafe au lait bowls and are unsure if they are worth it, look under it. If the bowl has a mark it can help, especially if it's the Sarreguemines there are plenty of Sarreguemines collectors around. Otherwise if unmarked or a mark you are not familiar with, make sure it as a nice design: fruits and flowers sell well, so are the ones with polka dots.
Here's a few recent price realized on eBay: Vinatge French Cafe Au Lait Bowls