diameter: 3/4 in. ( 1.9 cm )
Circular pin-back button inscribed "CALIFORNIA" with image of state seal below motto "EUREKA"; printed paper backing.
printed: on label inside button back: "AMERICAN PEPSIN CUM CO./BUTTON MADE BY/ THE WHITEHEAD & HOAG CO./NEWARK, N.J./[various patent dates]
Due to ongoing research, information about this object is subject to change.