Glorious vintage hippie-era shirt, made in England in the 1960s by Mr Fish of Clifford Street (a very fashionable London brand in the late 1960s!).  All cotton, lightweight summer shirt in cheerful green, with contrasting blue top stitching.
Quite a large collar, with an uncompromising shape.  Button front.  Double cuffs for cufflinks.
Collar size 15 inches.  
Actual garment measurements:
Chest 38" (maximum).
Shoulder to shoulder 16.5".
Length at the back 29".
Sleeve, shoulder to cuff 25".
Sleeve, armpit to cuff 23".

Condition:  Good quality vintage shirt, which has clearly been worn many times but still has some life left in it!  The collar is a little frayed round the edges, as you can see, but apart from that, the shirt is in good condition, and has just been laundered.