Here is an older red, pre-worn T-Shirt, size XL (read measurements below) that has a graphic silk-screened on the front that says UNITED NATIONS We Believe UN Women's Guild. Nothing on the back. The T-Shirt measures 25 inches across the chest measured under the arms and from the back of the neckband to the bottom hem is 29 inches. No holes or stains and 50% cotton and 50% polyester.
And just so you know...
http://www.un.org/other/unwg/