From Leica Wiki (English)
- Production era - 1935-1949
- Type - Hood for Hektor f= 2.8 cm 1:6.3; earlier with nickel set screw or later chrome set screw. NY version from 1941 with either brushed chrome or glossy black finish.
- Reference - Page 106 of Dennis Laney's Leica 1984 Accessory Guide courtesy of Mike Butkus.
- Forum discussion