Vienna Austria Enamel on Silver Napkins Rings Bohm. Fantastic pair of Vienna enamel napkin rings. They are even an enamelled on the inside, and not with a repetitive simple pattern but with the same design as on the outside! We have never had or even seen a pair like this before. No apparent makers mark, bur given the small size to be expected. Extremely rare! Excellent condition ready for your collection. Email with any questions.