Lot# 9020

franked with six examples of Tsingtao Silver Yuan overprinted stamps, paying a total of 26 fen, tied by Tsingtao cds “38.5.21”. The franking correctly pays the combined domestic airmail, express and registration rate of 26 fen in effect at the time. The cover from Tsingtao to Foochow illustrates airmail transmission between East China and the southeast coastal region. At this period, Tsingtao was temporarily cut off from the central postal system and stamp supplies, and the local post office overprinted and issued its own “Tsingtao” Silver Yuan stamps as a provisional measure to meet postal needs. This cover represents a genuine usage of Tsingtao overprinted Silver Yuan stamps on a domestic expressed airmail registered item, demonstrating the combined use of multiple postal services (airmail, express and registration), and reflecting the practical operation of local postal services during the transitional early Silver Yuan period, of postal history and exhibition interest.