Good to know that you are busy with something exciting Don.
Yes ebay is very nice place to find some of the very unique gems but one needs to be careful too with the growing scams.
As for the reference images, yes ebay is very useful, unfortunately image will get deleted in 3 months or so and wish if one could access the very old items just for the sack of antiquity of it.
Here is another catch of mine that seems to be just built for you. Have peak:
LINK
Nikon 300mm F/2. Must have been built for the jet black night hunting owl!