This is what Leica was meant to be used for. Not for displaying in your showcase or using as an expensive accessory on red carpet.
This is Leica M6 of a photographer Blake Andrews, who has been active in film photography since 1993. The following image explains how exactly it was worn out.
Click the link below to read his blogpost and see more such images of the same camera.
Source: Camera as artifact.
- The Marks of a Leica That Has Not Been Used as a Fashion Accessory (petapixel.com)
- Most Expensive Production Camera and First Leica M Sold at Auction (petapixel.com)
- Paul Smith on Photography & His Collaboration with Leica (selectism.com)