[TimG]

I don't know that I've seen an upside-down LA stamp, but I've seen a few Corvette stamps with the VIN upside down. I found a shabby old '67 Corvette here in Austin with the VIN upside down and famous Corvette collector (rest in piece) Roby Price made famous a black '67 435 Corvette with an upside down VIN. Some say it was nothing more than an error, others say it signified a shift change or closing of the plant for a holiday weekend. There's not doubt that the upside-down stamp did occur. I wouldn't consider it a knock out factor by itself.