Lillian Pines sterling silver pin

I bought this sterling silver pin for my mother about 20 years ago for about 15 bucks, not having the slightest idea what it was. From what I gather, it was made in about 1930 by Lillian Pines, a New York-based silversmith. Her work seems to be fairly rare these days.

After reading the article below, my mother realized I'd actually given her something that was pretty cool. Who knew?

http://www.collectorsweekly.com/articles/an-interview-with-arts-and-crafts-jewelry-collector-and-author-elyse-karlin/