Weren’t the original continental curtains a cream base and with stripes of colour across them? Will try to find a pic
Looked like this, although I don’t think the reproductions have the weight right nor the natural slubs contained in the original fabric https://www.heritagepartscentre.com/uk/231898237-curtain-set-10-piece-westfalia-chequered.html
Half way down this page you see our non Westy curtains! In a Westy styleee. As above, a pocket on the top and a simple curtain wire along the bottom https://thelatebay.com/index.php?threads/chip.33075/page-16 Pelmets on the Westy late bays were held on with self tappers, making it easy to remove the curtainage for cleaning.
@Andyr7 Pics of my 1977 Westy Helsinki, original curtains and rails. The height of the wire to hold the curtain against the side of the bus may be different on other years, or even depending on where the bloke decided to drill the hole for the screws.
Your curtains are longer than mine were hence why mine were threaded through the bottom seam. Westfalia must have changed that for a less camper/more homely look like yours later. On another note, it's lovely waking up to 0range curtains, many's the time I've got up in a warm glow none the wiser to a horrible cloudy day outside.