This pretty chain and large heart pendant resembles Florenza or 1928 jewelry.  The textured antiqued gold tone open work filigree heart opens from the bottom and is hinged at the top with a spring.  You can put a piece of absorbent material inside and douse it with your favorite perfume.  The chain measures 24" and the pendant is 2" long by 2" wide and the depth of the heart is about 5/16".  it is in excellent condition.

Full view when worn: