Hello and welcome to my bottle cap website! Here you will find everything about a unique and wonderful hobby that consists of many facets. It's not just about "emptying" beer and soda for the hobby or, in some eyes, picking up "trash" from the street, but also about trading with a worldwide network of collector friends and talking shop about our passion. Digitalization has now also taken on a very high priority, which can be seen impressively on collector sites like crowncaps.info. There is hardly a country where William Painter's most successful invention has not yet found its way. Even with competition from PET caps, crown caps are still strong on the market when it comes to bottle closures. This website is intended to give you an insight into this unusual hobby - my bottle cap world (Kronkorkenwelt). Your Marco Petrik.