A rare Leica O-series camera No. 121 from 1923 is coming to the next Wetzlar Camera Auctions on October 07th, 2023 in Wetzlar:
“Leica 0-series No. 121, 1923 – two years before the Leica was launched, 22 to 25 cameras of what is nowadays called the Leica 0-series were made for testing purposes, of which 16 are still known worldwide today – these cameras represent the prototypes of all Leica 35 mm cameras to date – the Leica 0-series cameras are indeed the most significant Leica cameras after the UR-Leica and no major collection can be considered complete without an example.”
Additional information:
Rare Leica 0-series camera No. 121 from 1923 coming to the Wetzlar Camera Auctions by NikonRumors on Scribd