Photo Engineer
Subscriber
The "66" block of Nikon's is known to be very rare. The Nikon S3 half frame was produced in very small numbers, but used the 66 block. The "65" block has a "hole" at the beginning of the block bacause of the Nikon S4, which occupies ~6,000 numbers in the 65 block.
I was not aware of holes in the 64 block. Does the blue book state anymore about it?
I don't have the book. I was reading it with a friend at his home. He is the collector. We were trying to find why the prism could not be changed for the coupled prism and there was a hole in the block which was covered in a separate paragraph.
Sorry, but I don't remember the details.
PE