I’ve expressed my love for Retna multiple times here (as seen in these posts: one // two // three). He might be one of my favorite street artists. His signature is this sort of calligraphy pattern, which reminds me a bit of heiroglyphics.
This Retna mural is located in Culver City near (or adjacent to?) an art supply store.
Here’s the address of the art supply store:
Graphaids Culver City
3051 La Cienega Blvd
Culver City, CA 90232