Twelve vintage postcards used by family members on various international trips. 
The larger ones are 5-7/8" x 4-1/8" and are unused. The smaller, "standard" cards have all been used.
In order on main image:
South African Airways 727 over Johannesburg, SA - unused.
Pompei Excavations - The Forum Civile - unused. 
The Roman Forum - unused. 
Front View of Mount Nelson Hotel, Cape Town, SA - unused.
Fatherland Altar, Victor Emmanuel II Monument - unused.
Victor Emmanuel II Monument "seen from the airplane" - unused.
The Tiber - St. Peter's Basilica - unused.
"Swizzle Inn," Bailey's Bay, Bermuda - postmarked in Bermuda April 1933.
Chapultepec Castle, Mexico City - postmarked January 1934.
Chapultepec Castle, Mexico City - postmarked January 1934.
Morro Castle, Havana, Cuba - postmarked in Havana August 1935.
University of Havana, Cuba - postmarked in Havana August 1935.
Molkenkur Castle, Heidelburg, Germany - postmarked in Heidelburg, year unknown.