Many old houses in Amsterdam have plaques which described the owner's occupation, in the time before house-numbers were introduced. Mostly they are black and dirty because of the dust and weather circumstances. But there is a society which keeps an eye on them and cleans and restore the plaques as this one from 1741 in the Binnen Brouwersstraat, which catched my eye by the sunlight that just lightened it up. The relief frieze has an image of a "Biblical mysterious nourishment". ( bit difficult to translate).
Here you have a better look of the image.