50s-60s Loop Collar Tropical Shirt Brown

Another classic Tropical shirt, but alas, no label. This shirt mimics batik prints in a bold and graphic pattern that includes large florals. The cut and loop collar and in-built pocket style (not a patch pocket) tells me it's probably late 50s-early 60s. A soft cotton shirt, probably a medium-large, with plain brown plastic buttons and shoulder pleats. Ple3ase go by measurements. This shirt has been very well looked after: stored in the dark. NO fade! I can't really find any flaws, other than the missing label. measurements:
Shoulder span: 17. 5
Chest: 44" around
length: 27" measured from bottom of collar to hem