I found this vague sticker in a restroom stall, up high–where the ceiling met the wall, at Harrah’s Lake Tahoe. Its lack of information hooked my attention. It’s the area code for Daly City, CA. There’s an Ironworkers union under that number. A Boeing 764. And, 764 is a good (although not “very good”) credit score. But I think it is the mark of Kode3, an artist of tattoos and rap music from Fresno CA. Search: Kode3 Real Fiction on iTunes. Amazon music. Google play. Worldwide. 764%. Check out: http://kode3.com/2013/05/23/see-me-for-tattoos/.
shewhodaresnothing 
I’m not sure whether to applaud your sense of curiosity, or the fine detective work you’ve done here. Cool story.
-JK