The color is an off white, Somewhere between white and ivory. 

Brooks Brothers Madison 18-34  XXLT Cotton White Long Sleeve Button Down Shirt

Good. One small stain on right cuff. One small tear on front. (both are pointed out in photos) rest of shirt is in great condition.

18 neck is about an xxlt. 

Please use measurements from a shirt that already fits you well and compare to the photos.