Hi Viscount,
I have posted to Flickr and received some info from grubb1937 that helps. (see below) Still looking for a definitive answer. If you want to send me a PM please feel free.
Regards
DD
"Ref. your frame. Sun frames had a frame number prefixed with letters on the left hand rear dropout. If it is a Claud then it should have a frame number on the underside of the bottom bracket shell. It may have been painted by Claud Butler/Holdsworth at a time and badged as one their machines. It used to happen a lot when frames were left in to the local bike shop for re-enamelling. Rather than put no transfer on the frame the shop or dealer used theirs.
Seat stay caps indicate this is a post war frame. However the lugs are heavy and are like pre-war Brampton or Chater Lea which have been cut and filed. Fork crown is similar to examples I have on a late 1930s lightweight and a couple of 1940s bikes. It maybe the builder bought a supply and just used up his stock regardless of fashion moving on. However fashion doesn't always indicate a well built frame. It is unusual for a builder not to number a frame unless he was building only for local club cyclists and his production numbers were very small. Would be interested to know who built your frame."
Hi Viscount,
I have posted to Flickr and received some info from grubb1937 that helps. (see below) Still looking for a definitive answer. If you want to send me a PM please feel free.
Regards
DD
"Ref. your frame. Sun frames had a frame number prefixed with letters on the left hand rear dropout. If it is a Claud then it should have a frame number on the underside of the bottom bracket shell. It may have been painted by Claud Butler/Holdsworth at a time and badged as one their machines. It used to happen a lot when frames were left in to the local bike shop for re-enamelling. Rather than put no transfer on the frame the shop or dealer used theirs.
Seat stay caps indicate this is a post war frame. However the lugs are heavy and are like pre-war Brampton or Chater Lea which have been cut and filed. Fork crown is similar to examples I have on a late 1930s lightweight and a couple of 1940s bikes. It maybe the builder bought a supply and just used up his stock regardless of fashion moving on. However fashion doesn't always indicate a well built frame. It is unusual for a builder not to number a frame unless he was building only for local club cyclists and his production numbers were very small. Would be interested to know who built your frame."