Anchor Steam Earthquake Upside Down Label

My favorite piece of Anchor Steam memorabilia is a bottle of the beer with an upside down label affixed to it. According to the great Herb Caen:

"...Onward: If you see Anchor Steam Beer around with the labels affixed upside down, you have found yourself a collector's item and a most unusual brew. At the time of the quake, Anchor's power went off as two batches of brew were brewing. The beer produced after the power returned five hours later was what the experts called "overbrewed," signified by the upside-down label..."

-San Francisco Chronicle, December 12, 1989