1852 $10 Wass, Molitor & Company, Large Head, Wide Date PCGS AU53. K-4, R.5. A Federal Assay Office opened in San Francisco in 1850 but initially only fifty dollar “slugs” were coined. Since smaller denominations were needed in commerce, private refiner Wass, Molitor & Co. helped fill the void by striking five and ten dollar pieces in 1852 and then 1855. The present typically struck representative displays pockets of luster and is only moderately abraded for the issue.