DAVID-ANDERSEN
Mid-Century Abstract Brooch 
'Summer'
Silver & enamel
Length: 3.3 cm (1.3 in) Width: 4.3 cm (1.7 in)
Marks: D-A 925S - NORWAY STERLING with scales hallmark
Designed by: Thor Lie-Jorgensen 1900-1961
Each season was represented with a different colour enamel
Norwegian, c.1955