Lot# 9016

bearing one each of Shensi Postal District ordinary, airmail and registered Unit stamps, paying a total of 22 fen, tied by Nancheng cds “38.6.4” and arriving Canton on Jun 9. The franking correctly pays the 22 fen domestic airmail registered rate in effect from Apr 29 to Jul 31,1949. This cover clearly demonstrates the early Silver Yuan period practice whereby different categories of Unit stamps corresponded to specific postal functions (ordinary, airmail and registration), combined to satisfy the required rate. A standard commercial example of early combined airmail registered usage paid by mixed Unit stamps, of postal history and exhibition significance.