Congresses stamp catalogue

National Congress

National Congress

National Congress

National Congress

3rd Pan American Congress

Pan American Congress

Post Congress Montevideo

Postal Union Congress

Postal Union Congress

Postal Union Congress

Postal Union Congress

Postal Union Congress

Postal Union Congress

Postal Union Congress

Postal Union Congress

Postal Union Congress

Postal Union Congress

Postal Union Congress

Postal Union Congress

Postal Union Congress

Post Congress

Post Congress

First Pan American Postal Congress

First Pan American Postal Congress

First Pan American Postal Congress

First Pan American Postal Congress

First Pan American Postal Congress

First Pan American Postal Congress

1st Pan American Postal Congress

Filatelistencongres

Filatelistencongres

Filatelistencongres

Filatelistencongres

Philatelists Congress

Philatelists Congress

First Pan American Postal Congress

Congress Palace

Congress Palace

Congress Palace

Congress Palace

Congress Palace

Congress Palace

Congress Palace

Allegory (Type Merson), with overprint

1st Pan American Postal Congress

1st Pan American Postal Congress

1st Pan American Postal Congress

1st Pan American Postal Congress

1st Pan American Postal Congress

World Post Congress

World Post Congress

World Post Congress

World Post Congress

World Post Congress

World Post Congress

World Post Congress

World Post Congress

World Post Congress

World Post Congress

World Post Congress