Here is a substantial super-sleek Sterling brooch by the renowned Danish silversmithy, Hans Hansen (see bio).  This brooch was designed by Bent Gabrielsen Pedersen,

Condition: excellent, no visible damage, straight pin, rollover safety clasp 

Marks: Hans Hansen in script,  925S Denmark,  no number stamped

Size:  2.25" (5.7cm) wide

Year: 1950s