Murderabilia – Notorious Serial Killer – Rare John Wayne Gacy (1942-1994) Original Pogo The Clown’ Oil Painting – J.W. Gacy to the front and with an inscription to the reverse To Shawn Best Wishes [signed] John Wayne Gacy oil on canvas, measures 36 x 46cm – depicts Pogo waving. Note: John Wayne Gacy was an American serial killer who sexually assaulted, tortured and murdered at least 33 teenaged boys and young men between 1972 and 1978. Gacy became known as the ‘Killer Clown’ because of his charitable services at fundraising events and children’s parties where he would dress as ‘Pogo The Clown’.