1970s single duvet/quilt cover, camper van? (Canworthy Water PL15)

Surplus to requirement, still plenty of life in it and all the poppers work. A little fading here and there but otherwise fine. Freshly washed, clean and ready to use. There are 2 plain green pillowcases in the set and they're still in the ironing basket, so not photographed! They will be ironed for collector.