Nazi stamps are highly collectible. Parcel was a big-industry in Germany during the height of the third-Reich. Delivering weapons to the axis-powers-- was instrumental in conquering nations. Different denominations above the swastika showed the weight of shipment. It was a very advance mailing-system; as SS storm-troopers would confiscate items from the Jews being shipped to the concentration-camps-- and mail them back to their own family-members. It was like Christmas everyday in Nazi-Germany!!!