Standard M-mount prime lens for Leica M-system cameras.
The Leica Summicron-M 50mm f/2 Typ 11819 is a different production variant of the current Summicron-M 50mm, identifiable by a different Leica type number from the Typ 11816. Both variants share the same optical formula; the type number indicates a specific finish, production revision, or accessory package difference.
50mm focal length, f/2 maximum aperture, Leica Summicron optical formula (6 elements), Leica M bayonet mount, rangefinder-coupled.
Typ 11819 is distinguished from Typ 11816 by a different production variant identifier. For practical photography both deliver identical optical performance. The type number is relevant for Leica collectors who track production variants. Confirm the specific differences between 11816 and 11819 against current Leica documentation before purchase if the variant distinction matters.
Test rangefinder focus coupling accuracy. Inspect elements for haze and coating condition. Confirm Leica M bayonet engagement. Verify the Typ 11819 engraving matches the listing.