Help Identify Old Solid Rubber Tires

[gkeep]

Those do look like Greg's hubs. I just happened to be at Ridable Replicas Shop last Friday (a few blocks from my house) and got a lesson in early hub design from Greg and Mike (TR6SC). They showed me a number of originals and I know Greg has a history of supplying movies, amusement parks etc. We ran into one of his bikes on display in a restaurant in upstate New York last year, they get around.