Anyone have a coin?

On our way to Aizuwakamatsu, we stopped for lunch at a Japanese BBQ-place. We received a big plate each with pieces of raw meat and the grill in the centre of the table was lit.
As we sat there enjoying the food adventure, Henrik suddenly became serious and asked for the camera. He took a picture of a sign on a building on the other side of the parking lot. Here is the picture:

:-)