This is a great early electric dated June 21,1892 Thompson Houston style socket with edison adapt. and fitter. This socket has it's original screws and insulator in good working condition. I have not had the adapter off, it is tight and I did not want to force it.. The fitter is dated 1896. I am including this bulb that tests good. I will do my best to pack safly but can't guarantee the filament will make it. Please email any questions