Thank you for the replies folks. They are very helpful and give me something to work with. The front rim is textured but different from the one showed above. I will look more closely. I did come across references to Dawes' using Maillard freewheels elsewhere, I might just install the one I have until I find something more definitive.

Yes, its a "freewheel". Although I've messed around with bikes a lot, my mechanic expertise is in motorcycles, cars and vintage stereos. I find bicycle terminology slightly bewildering. I think "chainstays" should be a swingarm, "chainwheels" are sprockets and a "cassette" goes in your tapedeck. :-)

Wow, I got a reply from Randy. I love your website Randy. It has been an absolutely amazing resource in making progress on my bike projects, especially the French bikes. Your stories about bikes are extremely informative and entertaining.