The History of the Semper Augustus Bulb

Semper Augustus became important to historians because it was written about in the 1620s. A certain merchant had cornered the market on this type of tulip and that there were only 12 of them. This is practically the only mention of interest in tulips at this point. But actually when I look at the 1630s, I'm not seeing Semper Augustus, it's day seems to be passed.