Dave, it all depends on the model. I just looked at my E-855 and none of those markings are present. I did not buy it from Ebay, I purchased it from the local music store here and knew the owner personally - it's definitely not a knock-off. At the time, it sold for nearly $500.

Gary cool
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)