1960s Short Sleeve Yellow Shirt Size Medium EUC

Excellent condition short sleeve button up shirt with no major flaws. No material tag but it feels like cotton polyester blend. Size tagged is Medium (neck 15-15.5). Permanent press. No holes, stains or rips. Shoulder 18" Pit to pit 21.5" Length 29.5" Sleeve length 10" All offers welcome! 1960s 60s dagger spear collar button down bright yellow sunny vibrant