Stamps Category Economy

Centennial Year of the Ministry of Public Works - National Industry Exhibition.
Herman Cudris Castaņeda
sugar cane mill
Pedro Gruenholz
La Sciabica - (Campania)-Pescador.
Herman Cudris Castaņeda
Le Arance-Sicily- Orange Classifier
Herman Cudris Castaņeda
Sulfur Mines
Mauricio Medina
Metallurgical
Mauricio Medina
Cement Factory
Mauricio Medina
Shipyard
Mauricio Medina
Power plant
Mauricio Medina
Oil refinery
Mauricio Medina