Funny, a couple of Japanese FB friends posted Leica M6 that made me curious about my M6.
Mine is Leica M6, not Leitz M6.
There are three variations available that I have just have learned.
I bought this M6 in early 1990’s, and I haven’t used since 2001, it was in a box and had to look for the storage to locate it, and it says Leica M6 and Red Leica logo on it. I forgot about its appearance.
Here is the Link: http://camera-kaukau.lekumo.biz/arrow/2018/04/m6-3c63.html