This is a vintage sterling silver c1940 enamel pansy puffy heart charm that has a lovely yellow color enamel. It measures 5/8" by 1/2" without the bail ring and marked STERLING. There is some enamel loss but I have seen some that are far worse than this one. In all the years that I have collected pansy charms these vintage pieces all seem to have some wear. This charm is not a reproduction and is definitely a period 1940s charm.
Thank you for looking!