China 1948 Commercial Air Mail Cover Pair #756 & #757 tied by Shanghai cancels on Corner Advertising cover OIC Optometrists Oculists Institute Co. address to Brooklyn NY damaged top from opening
China 1948 Commercial Air Mail Cover Pair #756 & #757 tied by Shanghai cancels on Corner Advertising cover OIC Optometrists Oculists Institute Co. address to Brooklyn NY damaged top from opening