Number by catalogue:  Yvert: 2514  

Perforation type: 13x13

Subject:

250 won. Wind farm in flower's field

Topics: Wind turbines

Number by catalogue:  Yvert: 2515  

Perforation type: 13x13

Subject:

250 won. The energy of water. Hydroelectric power station

Topics: Hydroelectricity

Number by catalogue:  Yvert: ---  

Subject:

4 stamps of 250 won. The unit has been announced, but apparently was not released. In the catalogs it was not included

Topics: Hydroelectricity Wind turbines