The royal sock

    Looking through the catalogue for yesterday's RSW exhibition, I noticed this photograph of the Society's patron, H.R.H. The Duke of Rothesay (as he is known in Scotland). While two of Prince Charles' own paintings appear in the exhibition - I failed to spot them first time round but shall find them on my next visit - it's the royal sock I'm studying, specifically the detail of the cuff:

I like that stitch pattern - does anyone know what it's called?