Very rare sapphire blue wart flask is made ten times rarer by also being a pinch ir navel flask. Pinch flasks are not scarce overall but they are extremely rare in a wart flask, which are rare in and of themselves. Here is a nice one that sold in Europe -  https://imkinsky.com/en/auction-results/104/503/4/59137  This one is 17.14 centimeters (6.75 inches). Undamaged.