This is a Two Tone Brooch by Erwin Pearl with one side in Gold tone and the other side in Silver tone. It looks like a Pretzel or a Stylized Heart.
The Pin measures 1 1/2" across and 1 3/4" long. It is marked E. Pearl. It is in Nice Vintage Condition, with light scratching.
2 Tone Gold & Silver Tone Erwin Pearl Pretzel Brooch