Beautiful vintage modernist Matti J. Hyvarinen, Finland,  9 carat gold brooch. It measures approximately 4 x 4.7 cm and has a gold pin and rollover C clasp closure to the rear. Weight is 10 grams. It is signed with makers marks "MJH" , "375" and has import marks for London 1970 . It is in very good condition. 

Condition: Very good condition
Colour/Gemstone:  Gold
Metal: 9 carat gold
Size: 4 x 4.7 cm
Weight: 10 grams

Era: 1970