Probably produced at Tiffany Furnaces (Corona, NY, after 1892). These scarce lamp parts are from gas lights and small oil lamps.
Attributed to Tiffany Studios (New York, NY, 1878-1933)
Width 1.25 Depth 1.25 Height 5 in.
Fitter: Width 0.875 Height 1 in.
Note: slightly crooked fitter.