Old enamelled street plaque n°17

Enamelled old street plaque. Number 17 white on a blue background. Two fixing holes, slight traces of oxidation. In france an iron plate is fixed on the houses placed on the corner of the streets develops in the 18th s. In 1844, an order of the prefect of the seine rambuteau prescribed in paris the use of enamelled volvic lava plates, where the white letters stand out on a blue background.