The 2023 Summer Auction - Sale 340 Day 4

1930s-40s a group of 11 international and one domestic airmail covers,mostly bearing nice airmail routes indicating cachets. A nice group, good for study. Please view.

1930至40年代一組11枚寄國外及一枚金國內航空封，貼孫像、烈士、航空等票。大多蓋有各種航空郵路指示戳，十分精彩。適合航空郵政史研究。