You might have read it before here on Fratello Watches, but on May 15th, Christies has their Rare Watches auction. Three lots in that auction are pieces that you might have read about in a couple of our Speedy Tuesday articles. The white and yellow gold Omega Speedmaster Professional of the 1980s and a stainless steel version from the 1980s. All three with display backs. Actually, the first Speedmaster models with a display back. Lets have a look.Speedmaster Professional Reference 345.0808The first Speedmaster watch with display back in Christies Rare Watches auction catalog is this reference 345.0808 that dates back to ca. 1985. Lot 65, to be exact, was the first stainless steel Speedmaster...