Number by catalogue:  Yvert: 2790-2791  

Perforation type: 14x14

Subject:

Some sources it is a souvenir sheet, some - miniature sheet. It includes two stamps of 5 pesos.

In the design of the sheet shows statistics waste water by man and the scheme of water circulation in the nature. One of the way water extraction system with the wind pump is shown here (see detail).

Size (of sheet, booklet) mm: 301x99

Topics: Stylized mills Wind pumps and farm windmill