Liberia: 1899, 19.5.: 4 diff. stamps for REGISTERED use of picture postcard from
Liberia
1899, 19.5.: 4 diff. stamps for REGISTERED use of picture postcard from MONROVIA to Vienna (arrival pmk.), on back picture "Justice at Liberia Execution by hanging"
Condition: Cover
Catalog number(s): 28, 29, 45, 46