Art nouveau (Danish: skønvirke) pewter calendar frame manufactored by silversmith Mogens Ballin (1871-1914) and Goldsmith H.P. Hertz in Copenhagen Denmark. In 1908 Hertz took over the shop after Mogens Ballin, and he continued the production of the Ballin models using pewter.
Signed on the back with HB monogram.
Measure: 8.8 x 6.8 inches (22.5 x 17.5 cm).
Excellent vintage condition.