L & H Stern (LHS) of Brooklyn, New York. The company’s famous logo is in a diamond. These pipes are high quality production pipes. A popular and moderately priced pipe made from 1896 through the 1960's by the L&H Stern Company of Brooklyn, New York. Many of their later Sterncrest pipes featured silver bands and some were made with 14kt. gold bands as well.
The "Diamond" series appears to be their high-end line. They had a different logo which was 3 diamonds in a row, larger in the middle. They also had Allbriar models (stem and bowl both made of briar) in the Diamond line, and these tended to have a screw type fitment with stinger, like Kaywoodie or Dr. Grabows.