Like Mario said your clock dates around 1900 to 1910 approx. Its not a particularily rare one. I looked on ebay and found 4 listed with same case, maker, ect. Prices were under $200. listing price. Only one even had a bid and it was $99. !!
Shade looks to be modern, I saw an electrical cord in the pic, guess it was for the hanging lamp / shade. I would guess around 1970 or later.