1910-1940s an assorted group of 9 Hong Kong, USPA and USTP Sea Post covers and postcards. More valuable items include a KGVI 2c Royal Arms
1910-1940s an assorted group of 9 Hong Kong, USPA and USTP Sea Post covers and postcards. More valuable items include a KGVI 2c Royal Arms PSC (Yang P31).1910至1940年代一組9件香港、上海美國客郵及美國海郵封片，當中較高價值包含一件佐治六世皇家徽號郵資片（楊目P31）。
