Men's vintage shirt by Windsor.  Made in England, around the 1970s.  Blue.  Long sleeves. Button cuffs.

Collar size 16.5 inches.  
Polyester 65%, Cotton 35%.

Condition:   Vintage shirt, several decades old, unused and in beautiful condition. Still in its original box. (I just took it out for the photographs).
The box is in fairly good condition, a little scuffed, with one corner dented, but the shirt itself is still in lovely condition.