Hartford Fire Ins. Co. Hartford, Connecticut. Insurance Company. Chartered 1810. Mark Issued and sent to their Agency force. Back of mark says ""An authentic reproduction of the Hartford Fire Mark first issued circa 1840."" Tin. Recent issue but Authentic fire mark. Common. 9 1/8 x 4 3/4- See Link Below for more Pictures and Auction Item information like Min Bid, Bulau, etc