WINTU

• Production era - 1933-1948
• Type - Right angle viewfinder for Leica II (model D), Leica III (model F) & Leica IIIa (model G) with swing-in prism for focus. Attaches to shoe on top of camera. Mirror image until 1938; also for copy stand use when fitted to front of lens with WZCOO.
• Variants - Black or chrome; WOOSU with additional internal prism (1938) identified by an extra screw near eyecup (first image)
• Reference - Page 18 and 61 of Dennis Laney's Leica 1984 Accessory Guide courtesy of Mike Butkus
• Forum discussion
  • JCB's...a little III