Chelsea Boston Mantel Clock Retailed by Tiffany Exc. Cond. Casing 1900 - 1904 

Serial number is 10694 - on the  case.  the case should be from  the1900- 1904.  the mechanism number is
176845 or 178845 hard to see inside. probably from 20's or 30's

It is a  Tiffany & Co.  Please look at picture for condition. I  think for its age look great. the clock is in excellent condition in all respects.  The mahogany case is excellent - no scratches or dings.  
I had it clean in working about 4 years ago. but know, it stopped working. 

The dial measure approx. 4 1/2 inches in diameter. 
The clock measures 8 3/4 inches high, 6 1/2 wide and 4 3/4 inches deep.   come with a key.