Typical cryptic frame number from years ago.
As mentioned the Capella lugs here http://www.carltoncycles.me.uk/details/ ... apella.jpg
were a Carlton lug from 1958 to 1966 and aside from some lug sets sold off by carlton means the frame is a Carlton from that period..............and very nice it is too
Carlton liked their chrome and wonder if parts of the frame are chromed. The forged dropouts also mean that it's a nice frame.
And there is you conundrum, as the bike sits, it is too nice to sell as a pub beater............however, someone who has an eye out for carlton would only like the frame.....
If you are selling I'd try and work out what frame it has, Post in the general section here with pics asking the question "what frame is this" and hopefully someone (like Spokesmann) with more Carlton knowlege will be able to help.
Please don't sell it for peanuts to some fixed junkie who will grind the mech hanger and braze ons off !