§ 1. That gunsmiths shall have a lien on all guns, pistols, knives, powder flasks, and shot-pouches or belts which have been or may be left in their care or custody for repairs, for the payment of reasonable charges for the work and repairs done and performed by such gunsmith thereon at the instance or request of the owner or owners thereof; and where any such gun, pistol, knife, powderflask, or shot-pouch or helt has remained or may remain in the care or custody of such gunsmith, without payment of such re’asonable charges, for the period of twelve months, it shall be lawful for such gunsmith, after such articles remain in his hands twelve months, and due notice of sale being given, to sell at public auction, for cash n ahnd, any such gun, pistol, or other article mentioned, for the payment of such reasonable charge and the expense of advertisement and of the sale; and if the amount of the sale exceed the amount of said charge and expense of advertisement and sale, the surplus shall be paid to the owner of such articles or his representative on due application.