The Eureka Challenger M. This model had a full wood handle grip, and an extremely streamlined finish. Early Ms had a plated steel handle with the older bag and badge(like mine) and later ones had an updated bag, badge, and an aluminum handle. No pic on hand of the later variant, I'll leave it for the next revision. Some Ms were painted red and brown, and not always marked with a suffix like M60. For the sake of organization I will only include painted Ms listed under a suffix. Ad courtesy of Portable



