Pin is old, not sure of the age.
The enamel and crystals are in very good condition.
It's a really pretty piece and you can tell that it was well loved and worn often.
The silver tone coating is worn almost all the way off on the back side and on the pieces in front that connect the flowers but the pin still looks very nice.
It looks like the base metal was copper for this piece.

The measurements are length - 1 7/8" x 1/2".

This item is sold from an excellent, highly rated vintage boutique in Mohave Valley, AZ.