I recently purchase a 2009 Starla-X. I sent the serial number to PRS and they confirmed it was the real deal. I was just cleaning the guitar headstock (after removing the strings) and I noticed that Paul signature looks like a sticker that was clear coated over! I compared to other Starla-X's online and it was the same. I compared to my other PRS', it definitely was not the same. Is it really a sticker? Anyone know?