Friedrich Speidel, Germany vintage modernist sodalite  and 835 silver brooch.
 It has a pin and rollover C clasp closure to the rear.  It is marked "835,
and "F SP"  on the rear. It measures approximately 4 cm x 4.5 cm. Weight
is 11.7 grams.  It is in very good condition.
 

Condition: Very Good
Colour/gem:Silver and sodalith
Metal: 835 Silver
Size: 4 x 4.5 cm approximately
Era: Estimated 1960's to 1970's