Henry C Hart Matchless Air Rifle.
See also HERE.
This company operated in Detroit, Michigan, at the end of the nineteenth century. Manufacturer of the Matchless air rifle, along with a huge range of hardware products, such as metal mail boxes and miniature toy safes.
With thanks to Beth of Amoskeag Auctions, Inc. for permission to post these pics.
The original auction blurb said: "serial #D27349, .180 cal., 35 1/2" overall. This desirable rifle is all original and complete. The barrel and air chamber retain 95% plus original nickel plated finish. The iron frame retains about 70% original black finish with the areas of loss bearing a rich brown patina which blends well with the original finish. The slab walnut stock rates excellent with about 95% original finish remaining which shows just slight crazing and has a very crisp cartouche left side which contains the makers name and address. A wonderful example of these desirable air rifles."
Here is a safe made by the same company: