100 Pesos 1988 - "500th Anniversary of Discovery and Evangelization of America" is available for sale or swap : https://en.numista.com/catalogue/pieces47086.html .
Metal - Silver 999
Weight - 155.53 g
Diameter - 65 mm
Beautiful golden toning !
Sale price: $250 (+ $7 postage)
Swap value: $260.