It is made from vitreous enamel fused onto sheet steel. Heavy gauge - unlike modern versions this one can't be bent easily. Very durable. Made in 1990s.
5½" x 7⅛". Domed with the white enamel in relief. Highly stylised. From Loire. Not a copy, not made yesterday.Around four thousand house numbers in stock at the last count - large, small, old, high, low, enamel, cast metal, bell metal, convex, flat, Danish, French, Australian, Japanese, German, Belgian, UK. Please let me know if this is not the number or style you require. But I have few numbers higher than #600.
Please see my other listings if you like French signs and numbers.