Pre 1950s rides of LFGSS: old bikes, vintage rats, classic lightweights

Two points here:

I think this is a Dawes Coureur not a 'Courier'.

Coureur is a word which has caused a lot of trouble in English cycling. It is a French word with the basic meaning of 'runner' (courir = to run) but it has come to mean competitor, and since in France far more was written about cycling than running, coureur most often means racing cyclist. A 'courier' is someone who carries something - a package or a message - from one place to another.

I've gone to this length to explain the difference because these two words are very frequently muddled, often by people who should know better.

The late Jock Wadley, perhaps this country's greatest ever cycling journalist, tried to call his magazine 'Coureur', which should have been an excellent title since it was heavy on reporting continental racing in a way that 'Cycling' certainly was not. Unfortunately it proved to be impossible to stop people thinking of it as 'Courier' and eventually the name had to be changed to 'Sporting Cyclist'.

Flamboyant

Flamboyant (aka Flam and Lustre) is a style of painting rather than a colour - you can have a flam in several colours - red, blue and green being the commonest. The finish is achieved with a base coat of silver oversprayed with a tinted lacquer. With bike frames it would be common practice to apply transfers onto the tinted lacquer and then finish with clear lacquer.

I used to buy the coloured dye separately and add it to clear lacquer as required.

It should be mentioned that Flams generally are not very durable because any scratch will tend to reveal the silver base coat which will be hard to hide. It's not easy to touch in the coloured lacquer, even if you have the right dye. Note that it is important that the painter does not fully stove the silver coat as this will cause poor adhesion of the lacquer.