anon438
429
RE: Vacheron & Constantin ref 4724
This style is best known by the aficionados as the Chronomètre Royal (CR refs 4838, 4907),
it have been not much recognised yet that there have been also variants with 'standrad' V&C 453 & 454 manual movement.
Some of them outperform the CR samples in rarity easily - especially if you think about the Cloisonné Enamel dials variants.
Maybe you call the design of the case simply the 'Georges Croisier' or the 'GC'? It was from his workshop, probably the designer also:
Check the VC background info
here and advertisment of his company
here and a patent from Georges Croisier
here
Georges
Croisier with his company Genevor SA located at Coulouvrenière 40, 1200
Genève, was one of the most respected case makers of the post-war era.
He was also working for other famous names like Omega, PP or IWC and others. The Poinçon de Maître (case makers mark) of Genevor SA is 'the key' with the number 5.

But I would like to add since I've seen not much dial variants of the 4724 yet they are probably there.
ref 4724 Cloisonné dial

ref 472x subsecond dial