This is today's collection of "Pictures of the Day" from the BBC. Look at the next to last picture. Caption: "A Sikh performer spins the Chakra, a traditional weapon, during a religious procession ahead of the martyrdom day of the ninth Sikh guru, Tegh Bahadur, in the northern Indian city of Chandigarh."
Can this be what the famous chakra looked like? Then we got it wrong on all the pictures!