Posted 05/06/2014 1:53 pm
I do not see any reason to think this coin was mislabeled. The S-mint Eagles do not carry a mintmark so the only way to know the source is to submit an entire monster box(500 coins) to a TPG, the seal on the monster box lists the Mint. Whoever submitted the coin most likely had the entire monster box slabbed with the Golden Gate bridge anniversary labels, a label that has little to no importance outside of San Francisco. It is nothing more than a marketing tool for the bridge anniversary, possibly some sort of fundraiser. Anyone with a large enough submission can get a custom label.
