Vintage 60s Rob Roy Button Down Brown Checked Shirt

Impeccable Vintage Roby Roy Short Sleeve Button Down Checked Shirt with slightly pointy collar Colorways in brown, beige and white I believe it is from the late 60s -Five buttons, starting from the collar, allowing nine extra inches of fabric to style, they are clear iridescent plastic -There is a single front patch pocket -The tags read "Size 16, Neck 13 1/2, Rob Roy, Durable Press" - originally a shirt made for boys -The model wears a 2 or size small at Anthropologie Approximate Measurements (while laying flat): 28" long (from the shoulder) 8.5"(from the shoulder) 5.5" (from the pit) sleeve 19" pit to pit 15.5" shoulder to shoulder