Cor-Ten steel. Also known generically as weathering steel, its specific alloys produce a stable rust layer that becomes a protective coating. It’s durability in appropriate applications is unmatched, and its patina improves with age.
stainless steel cedar house numbers address plaque by Rancidmetals
Stainless Steel Letterbox | eBay
Very stylish house numbering with matching stainless steel mailbox and a spotlight for after dark~
Modern Mailbox Large Mahogany and Stainless Steel by CeCeWorks
This Stainless Steel and Walnut mailbox measures 18W x7H x 5 1/2D. The mailbox is designed after the 1950s black mailbox that used to hang on my house.
Modern Mailbox Mahogany and Stainless Steel Mailbox by CeCeWorks
Found it at AllModern - Stainless Steel Wall Mailbox
Mailbox on wayfair
Found it at Wayfair - Stainless Steel Wall Mailbox