ISBOO

• Production era - 1956-1999
• Code numbers - 14097 ISBOO
• Type - M adapter for Leica thread mount lenses to M-bayonet camera bodies and to indicate proper framelines with:
  • Elmar (I) f= 9 cm 1:4
  • Elmar (II) f= 9 cm 1:4
  • 90mm f/4 Elmar
  • Elmar (III) 1:4 / 90mm
  • Elmarit f= 9 cm 1:2.8
  • Thambar f= 9 cm 1:2.2
  • Summicron (I) f= 9 cm 1:2
  • Summicron (II) f= 9 cm 1:2
• Reference
  • Page 109 of Dennis Laney's Leica 1984 Accessory Guide courtesy of Mike Butkus.