Here is another super stylish long sleeve button down shirt, this one by J. J. Cochran. It is a nice fabric, with a pattern based on a purple background. Sharp and cool dark maroon, white, and gray stripes throughout. This one is missing the button on the pocket. Other than that, it's perfection. It's 65% polyester and 35% cotton. The tag says 16-16 1/2, but here are the measurements. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 23"
Shoulder to end of sleeve (including cuff) 24"
Length 33"

This item is sold from a vintage boutique in Roanoke, VA.