RAF Crest in Period Frame

Hand embroidered with crest and motto "Per Ardua Ad Astra" which translated reads "through struggles to the stars". The crest is surmounted by a King's crown and probably dates to WWII, perhaps worked by a mother, wife or girlfriend of a serving member of the RAF. The colours are still bright with no sign of moth damage. 27 cm x 22 cm (10.5" X 8.5").