Paper lace and printed silk: collection of fine and charming luxury cardsSix early wishing and friendship billets. Austria Germany, ca. 18001820. A charming collection of early 19th century Glckwunsch and Freundschaftsbillets, distinguished by the refined techniques that characterised the Viennese and South German luxury card industry: hand coloured printing, blind embossing, pierced paper lace, and printed silk insets. In the Biedermeier period these billets were widely used in domestic exchange, especially by women, who