diameter: 2 1/2 in. ( 6.4 cm )
printed: on side of button: "NURSES' ENVIRONMENTAL HEALTH WATCH N.Y.C."
Circular pin-back button; "MORE THAN ATOMS CAN BE SPLIT"; image of an atom superimposed upon an earth being split in half; white, blue, green and black.
Gift of Beatrice J. Siegel
Due to ongoing research, information about this object is subject to change.