Is the little block dynamo at all collectible?
"Block dynamo" was a term used to describe the dynamo's with an attached headlight that mounted on the fork. Handy, and easy to quickly remove or attach, if you didn't ride at night a lot.
I've got a Jos model that I bought in the 70's and used a fair bit. I hope there are people saving this sort of thing for their vintage rando bikes or similar.
Here's a shot of mine...
Steve in Peoria