3 ¾” x 4 ¾” black and white proof print,

3 ¾” x 4 ¾” black and white proof print, back of print is BS2872 (close up of chicken egg shells and baby chick on pedestal beneath test head of Baldwin Universal Testing Machine demonstrating the control range of the Baldwin 5,000,000 lb testing capacity – delicate enough to “hatch” a chicken egg all the way to 5,000,000 lbs of compression or tension depending on required test force)