William Penn finger lamp; colourless pressed font with molded handle; underside embossed “PAT’D JUNE 30th 1868”; “0” burner and “0” pearl top chimney
Atterbury and Company, Pittsburgh, PA.
 
Measuring 4 ½”H to top of collar
 
Reference: Catherine Thuro, Oil Lamps. The Kerosene Era in North America – pg. 146