SUWOO

• Production era - 1935-1939 (Note: image above is labeled 1925 by Westlicht; Laney has 1935 - same era as the OLEYO and OLIGO; a Westlicht SUWOO sold for 1,000 Euros in 2002)
• Type - Mini-telescope 5 cm viewfinder for single-shot housings OLEYO and OLIGO
• Reference - Pages 14 and 20 of Dennis Laney's Leica 1984 Accessory Guide courtesy of Mike Butkus.