I notice practically no specific interest in p.w. cases. Certainly some interest with bargain gold cases at or below scrap values are an active interest of which I am guilty. However, I will buy a watch only because it has an interesting case. Not valuable, but novel. I have often bought fine gold cases ignoring the movement qualities when priced reasonably which does not seem to be a normal watch collector inclination. At any rate some nongold cases not expensive that I value enough to buy as a collectible: Even the fancy multicolor gold is gold fill. Gun metal. Sea shell. Silver with black Niello.