Leica's M3 converted to single-wind — modified from double-stroke to single-stroke film advance.
The Leica M3 (Chrome, converted to single wind) is an early M3 originally produced with double-stroke film advance that was later converted to single-stroke advance. The M3 is the most important 35mm camera in photography history.
Same M3 specification — fully mechanical, combined rangefinder/viewfinder, 50/90/135mm framelines. The conversion from double-stroke to single-stroke advance was a common modification. The double-stroke originals are more collectible.
Leica M mount. Chrome finish. Converted from double-stroke to single-stroke advance. Fully mechanical — no batteries. The conversion was factory or dealer performed. Some collectors prefer unconverted double-stroke.
Available used at professional to luxury prices — converted M3s are typically less valuable than original single-stroke or unconverted double-stroke examples. For M3 users wanting practical single-stroke operation at lower M3 pricing.