UPDATE: These were listed on eBay in 2012.
Hublock hubs appear to have been made by Dana-Spicer.
“This is an original pair of vintage lock out hubs. These are made by HUB LOK. I am not sure if these were Sears, Spicer, Dana, ACME or whatever. They work just fine. They fit the Dana 25 front axles. These fit the MB, GPW, CJ2A, CJ3A, M38, M38A1, CJ3B, and early Cj5. They need a good cleaning.”
Looks like these were salvaged out of a muddy river. I’d be careful bidding.