UOOYW

• Production era - 1951-1980
• Code number - 16590
• Type - Connecting collar for Leica 36 mm screw-mount lenses to Bellows I and II
• Accessories
  • UOOVH adapter for use with 39 mm Leica-screw lens head:
    • Hektor f= 13.5 cm 1:4.5
  • Adapter 042-716.041
    • 12.5 mm PHOTAR lens
    • 25 mm PHOTAR lens
    • 50 mm PHOTAR lens
• Source
  • Dennis Laney's Leica Accessory Guide (1st edition) page 48 courtesy of Mike Butkus
  • see also JCB Bellows
• Forum discussion
  • Fontenelle archive