Cut the veal into thin slices and flatten with a wooden mallet. Place a slice of ham, prosciutto crudo preferably, over each slice of meat with a sage leaf in the centre. Use a toothpick to ensure ham and sage leaf don't move when frying the meat.
Put the oil and butter in a saucepan. Lightly dust the scaloppina, slice of veal, with flour on the side without the ham and fry over medium flame until the meat appears to be cooked. Add wine and simmer for another couple of mins. Add pepper to taste, don't add extra salt because of the ham and arrange the saltimbocca on a serving platter. In the skillet used to cook the saltimbocca, let the cooking juices reduce for a minute, then pour over the saltimbocca. Serve immediately or cover the pan with a lid to keep them warm.