Rare Green vintage « Concord Block » single flat bed sheet from the 60’s-70’s

Rare Green vintage ‘Concord Block’ single flat bed sheet from the 60s–70s with Pantone-like circles and tone-on-tone patterns. • 1 green flat twin sheet (approx. 70 inches wide) with small stains along one edge that need cleaning. VERY GOOD CONDITION EXCEPT FOR THE SMALL STAINS. See photos.