Shoot. If only the artist left us some indication of who we have to thank for this masterwork.
Alas, this colorless, plain-script tag - we'll call it "Andy" - will forever be mired in anonymity. The expert craftsmanship and dedication to detail, however, will be on full display until it rains or someone grabs a sponge.
Spotted this in San Francisco's Financial District on California St. between Kearny and Grant, if anyone cares to glimpse transcendence... while it lasts.