I want the history of Hassen Forder safe co. Philadelphia, PA circa 1870?

Question:

I want the history of Hassen Forder safe co. Philadelphia, PA circa 1870?

i have acquired an antique floor safe with Hassen Forder Safe Co. Philadelphia, Pa. It has a brass combination lock made by Sargent & Greenleaf Rochester NY with a patent date of 1871. It weighs about 2000 lbs. and wooden shelves inside. I would love to know the history and maybe approximate age of my safe.

Best Answer - Chosen by Asker: The only online reference I've found is from an 1876 Industrial Exposition flyer. There are printed indexes to businesses that tell when a company was founded, purchased or closed. I would recommend talking to a librarian, especially a university librarian, to locate a copy of the correct index. Another possibility is to contact a high-end auction house. An appraisal may give you the information you want.