These two will be more expensive. The "Escudo" coin is part of the Ibero-American series issued by nine countries (Argentina, Cuba, Ecuador, Guatemala, Mexico, Nicaragua, Peru, Portugal, Spain); used to be ten but Paraguay stopped participating after the 2005 issue. The "Justo" coin is from the Numismatic Treasures series that started last year with the Morabitino. Spain has a similar series of historic coins, by the way.
Ibero-American Series: Escudo
max 100,000 Ag (unc), max 12,000 Ag (proof)
Numismatic Treasures: Justo
max 150,000 Cu-Ni (unc), max 2,500 Au (FDC)
Keep in mind that these are just the designs. The actual coins may look a little different. Oh, and they will all be round, no matter what the four image files here suggest.

Christian