In the last War we really had a lot of fights, so 26 of us managed to get to the 75k skull Pro-Chest (even without using any champs, by the way ?).
As far as we found out, nobody had any Crystals or Pro-Items in their chest. All of them only contained pearls, gems and food.
Calling them Pro-Chests is not right. War rewards have to be better, especially in the Mummy War, which too many alliances use to drop fiefs from the beginning on. Start motivating players, Flare! Its your job! This is an easy one!