A certificate of authenticity is included from Screenbid. The clock model itself is hard to find in this good of a condition and is especially unique due to its use on the show. It is approximately 5x5x2.5 and is in good working condition. The item “Vintage Mid Century Art Deco Starman Wood GE clock 4F57 Mad Men Joan Harris” is in sale since Wednesday, May 5, 2021. This item is in the category “Collectibles\Decorative Collectibles\Clocks\Desk,…