1. Wrought iron. A metal grape vine with hammered iron numbers adds a soft touch when set against a rugged stone house:
2. Found object. Brass numbers mounted on an antique wooden mold create a one-of-a-kind house marker:
4. Stained glass. Numbers incorporated into a decorative art-glass transom dress up a 19th-century door surround:
5. Fade-resistant sunflowers frame easy-to-read Art Nouveau-style tiles in this high-fired ceramic address plaque:
6. Spanish Revival. Hand-painted flourishes in yellow and blue give these ceramic tiles a Mediterranean accent:
7. A carved and gilded wooden plaque states its case elegantly, without fuss or fanfare:
The one we have at home in Argentina is something like #6. We bought them in the beautiful city of Guanajuato in Mexico.
I selected just a few for this post but there are some more house numbers at This Old House.