A rare working Jefferson Golden Helm mystery clock. This wonderful 1950s electric clock was made by Jefferson and the mystery is how it keeps time. The gold tone metal and glass clock features a ships wheel design and an anchor for the hour hand. In fantastic cosmetic condition, it is keeping accurate time in my office. As with all clocks of this age, a professional tune up is recommended to keep it running for years to come. The approximate dimensions are: height 7-7/8", diameter 7-1/4", depth 4-3/4".