Hopkins & Allen double barrel

Question
I was looking for some information about my great great grandfathers shotgun. Its a Hopkins & Allen 12g double barrel with two seperate triggers, and it doesn't have the rabbit ears.

Answer
The Hopkins and Allen company was founded in 1868 by S. S. Hopkins, C. W. Hopkins and C. H. Allen. The company experienced financial difficulties and in 1898 was reorganized as the Hopkins & Allen Arms Co. A fire in 1900 hurt them and in 1901, they were forced to merged with the Forehand Arms Company. The manufacture o f Hopkins and Allen firearms ceased in 1917 when the plant was taken over by Marlin-Rockwell Corporation for the war time production of Browning automatic rifle components. Hopkins and Allen was well known for the many models of inexpensive revolvers and shotguns.

Your Double Barrel would have been made between 1902 and 1917.