Metal Baseplate L-1 w/ Centered 1/4" Tripod Mount for Leica M2 M3 M4 M6
Here is a nice third party all metal baseplate for the Leica M series cameras. I was unable to find a brand, but it is well made and interfaces perfectly.
This baseplate features a centered 1/4" tripod mount that makes the camera much more ergonomic to use with a tripod. I also think it makes the camera easier to handle and gives some extra protection for the bottom of your Leica.
This item is in excellent condition with very little wear and works perfectly.