I'm guessing it's a World War 2 sons in service pin. If so, Whoever had this had one son in the war. They also had banners they would hang in the window. The stars were for how many children the family had in the war. Do some searching on ww2 sons in service pin and you may be able to find an exact match, I would but gotta get ready for work! Below is a common example but there are different varieties. HH!
Exactly. People would wear these if they had a son or sons in service. Also, they would put a large flag in the window with the same star so people would know they had a family member serving in the war. Great find. HH
Agree with ce550av8r... My Grandma on Mother's side was a Gold Star Mother and went to France in 1919 as a guest of their people as thousands of American Mothers did. Because my Uncle is bureid in France, they were guests of the people, all expenses paid. Grandma had a few of these type pins, and a Gold Star Flag replaced the Blue Star Flag for the window and Gold Star Flag pin to wear. Only a couple of these items have survived but I do beleive ce550av8r nailed it!