On rare occasions, defeated enemies or broken blocks may drop a rare silver coin worth 100 coins! How many of these have you collected in a single level in Wario Land II?
I've probably gotten 3 or 4 silver coins in a single level!
I never kept close track of that but I feel like whenever I go back to WL2 the beginning part of going around Wario's Castle is pretty consistent in giving 3 or more silver coins. Just the ease of grabbing a crap ton I guess