Yes, they're different varieties. I don't know if they're listed in the Krause
catalogue but they do show up in the Restrepo catalogue which is the most complete book on Colombian coins. They should be 17,5 mm and weigh 3,225 g. In the Restrepo catalogue they're listed as type 326-1 (first picture) and 326-2 (second picture).
Hope that helps.