NIKKOR DC Power Unit for Medical-Nikkor Lens

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production year 1970
grey, marked «NIKKOR»,
dim. 22 x 15.4 x 4.3cm
brown «NIKKOR» leather case,
dim. 23 x 15.8 x 5cm
Designed for use with one 240V laminated high-voltage dry battery and four D-type 1.5V batteries.
with 200mm f/5.6 medical lens 106293