Nikon Nikkor-S 1.2/55mm NASA *

fully working black anodized and modified Nikkor with clean lenses, focusing ring is extended further forward, milled and flush with all other rings, aperture setting ring with large diameter, focusing scale filled with orange paint, depth of field scale, aperture scale and NASA engravings filled with white paint, on barrel engraved 'P/N SEB33100773-3 S/N 10112' ('112' engraved by hand), the rear lens mount engraved 'DUMMY-2', 'P/N-0' and 'S/N 10', it seems that NASA modified dummies for use when cameras or lenses were needed - see Uli Koch 'Nikon F - The Camera' on p.109-116