and to Rudi's comments:
I assume they are Prior hubs, the RD hanger is much much later, the brassed wingnuts, the installation of the cotter pins, the oiler cap not Tecalemit nipple, the Stronglight crankset bolts, the late 1950s Simplex lever cover, the far too modern watch.

It hurts my eyes.
Interestingly a search does not reveal the frame date.