Yes, these are Prior hubs. I don't know a lot about them but they seem to be from the 40s and 50s. Small flange versions also exist as do road versions. I am pretty certain they are French.
Hilary Stone
Scott Goldstein wrote:
> Just got an old track bike with vintage hubs.
>
> The rear hub is amazingly large with an id i can't make out.
>
> The name is in a diamond shaped out line. I think it reads "Prior" or
> "Priur". Anyway, please take a look at the two pictures posted and give
> some clues. Many thanks in advance.
>
> http://www2.sendpix.com/