1960's yellow and gold striped short sleeved tee.  "Sportswear" label; 50/50 cotton/ poly blend fabric with ribbed collar.
Condition: Excellent with no visible holes or stains. Looks like it's never been worn.
Size: Vintage Medium. Actual measurements (doubled for circumference, unstretched) 
Shoulders: 33"
Chest: 37"
Sleeve length (from seam to cuff) 9"
Total Length 27"
photographed on size 40 mannequin