Mixing Bowl Sets Selfridges Where Can I Find The Mixing Bowl Shown On Page 218 Of Alton Brown's "Gear For Your Kitchen"?

Where can I find the mixing bowl shown on page 218 of Alton Brown's "Gear For Your Kitchen"? - mixing bowl sets selfridges

The bowl shown in the book, is made of steel with a large elliptical ring (for use as a double boiler) and a small hole for hanging on a hook. He cataloged the measures in the cups. The book says it is part of a series of three boxes of shells. No mention of the brand, so I hope that someone knows where I can find them ...