MARIUS HAMMER Rare GIANT Butterfly Brooch Norway Silver Enamel TURQUOISE Perfect  ~~~ RARE Giant Size fully 86 mm Wide ~~~ VERY RARE Colourway of Dark Blue Body and Turquoise Wings ~~~ Silver gilt and enamel by the master Norwegian silversmith Marius Hammer (1847-1927) and is stamped with his makers mark on the back and 930S for 930 silver

It is an example of his very high standards of craftmanship.  The butterfly's wings are enamelled with a wonderful rich colour with the original brooch clasp to the rear ~~~ Lovely bright sheen with no damage splits or chips to the pristine enamel

Length (distance across the wings) - 8.6cm (3.4 inch)
Head and Body Length (not including antennae) - 2.0cm (0.8 inch)
Maximum Width - 2.8cm (1.1 inch)
Weight - 17.

This is a very rare example,  a less common shape and of an unusually large size - nearly 9cm across.  The company closed down in 1930 and this brooch probably dates from the 1920s.