Nikon 1 and 18.5mm
The Nikkorex Auto 35 was a fixed lens (48mnm f2) SLR, the first Nikon SLR with Shutter priority AE launched in 1964. As it was a fixed lens camera it needed tele and wide converters to change focal length. Do not confuse the earlier Nikkorex tele converter, this had a silver barrel which I have tried and is not as good.
'A true photograph need not be explained, nor can it be contained in words.' - Ansel Adams