Delicate Sterling Pin/brooch Signed Lang

Though a designer of fine sterling jewelry, not much is known about Lang the maker of this delicate and beautiful pin. It is signed on the back "Sterling Lang" a company that was only in existance from the mid 1940's and not known after 1977. This piece represents some fine craftmanship in sterling of roses and leaves. It measures 2 7/8 inches by 1 1/2 inches. Condition is excellent.