1 inch diameter. Ernesto "Che" Guevara (June 14, 1928 -- October 9, 1967), was an Argentine Marxist revolutionary, politician, author, physician, military theorist, and guerrilla leader. Both notorious as a ruthless disciplinarian who unhesitatingly shot defectors and revered by supporters for his rigid dedication to professed doctrines, Guevara remains a controversial and significant historical figure. As a result of his perceived martyrdom, poetic invocations for class struggle, and desire to create the consciousness of a "new man" driven by "moral" rather than "material" incentives, Guevara evolved into a quintessential icon of leftist-inspired movements.
I'll send you a Che Guevara button for free if you'll email me explaining why it's ironic that his picture is on this button.