Zack's Express. Paid., bold blue handstamped oval express company frank, with illustration of expressman on snowshoes, on 3c Pink entire (U58), indicia uncancelled, to Port Wine (Cal.), a partial front only, irregular reduction into indicia, mounted on a complete U58, appears fine, express marking superb, rare, only two examples recorded, Granville Zackharian operated between Downieville and La Porte Cal., 1865-1866, using snowshoes in the winter