Leon: Looks like you might have a Chinese knock-off. This is not to say it's not a great guitar. In the attemp to look authentic, the Chinese use anything they find on various Strats, and in this case, they saw the round "Super Bullets" label that comes on some Strats advertising the strings, and used it on the headstock. I have a Chinese Strat knock-off that has "Made in USA" with a Z serial number on the back of the headstock, and it also has an MZ serial number and "Special Bullets" (not "Super Bullets"

on the face of the headstock - hey, if you're making a knosck-off, cover all of your bases

. Costs $200 bucks and is a great guitar. BTW, where did you get your guitar?