UOOST = UOOYW + UOOVH

• Production era - 1951-1970
• Code numbers
  • 16570 UOOST
  • 16590 UOOYW
• Type - Connecting ring for Bellows I UXOOR and Bellows II
• Accessories - UOOVH adapter for use with 39 mm Leica-screw lens head Hektor f= 13.5 cm 1:4.5
• Source
  • Dennis Laney's Leica Accessory Guide (1st edition) page 48
• Forum discussion
  • Fontenelle archive
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