This is a gorgeous shirt from Ermenegildo Zegna.

Made in Italy of a luxurious silk and cotton blend, it's in vertical stripes of blues.

The shirt has a button-down collar with hidden buttons, a left chest pocket, and a square tail with side vents. It has a slimmish fit.

This shirt is in PRISTINE, MINT condition.  Looks and feels like it's never been worn. It is guaranteed to be authentic and absolutely perfect. 

I have measured the shirt and: 

The neck measures 17.5 inches from button to button hole.

 The sleeve length is 36/37 inches from mid-collar to the end of the cuff. 

Across the back, laid flat, the shirt measures 25 inches armpit to armpit and 32 inches from the collar seam to the bottom of the back tail.