Maker, Unknown, most likely American. c. second half 1800's. Brass and bronze hybrid  flat bed frame design. Strike train frames one-half inch thick, going train three-eights inch thick. Hour strike using rack and snail system with quarter strike using a count wheel. Jeweled four legged gravity escapement using jeweled anti-friction wheel impulse rollers. Mercury compensated pendulum. Eight day duration (three day in current configuration). 27"w x 22"h x 11.25"d. 

The upper curvilinear bell frame support structure was recreated by Buchanan to perfectly match the extant pair of strike train frames. The entire gravity escapement had to be replaced as the one in "as found" condition was obviously not original and was a very poor attempt to replace what was missing. The gravity escapement was based on a design by Don Saff, but with a few modifications. The escapement is completely jeweled including the impulse pads on the pendulum.

The support for the pendulum incorporates the same curvilinear design as the bell support structure.

Here is another view of the escapement, only the black cast iron support is original as the extant gravity escapement was not original and useless.

Another view showing the extent to which Buchanan used his skills to recreate the bell and pendulum support systems. The bell hammers and their linkages had to be created as they were missing. The bell resonance is completely adjustable to make the sound as soft or loud as desired.

There was no dial since this would have been mounted in a very large tall case where the wooden hood would have held a glass dial with painted numbers. I had a custom dial and hands made to fit the movement.

This photo shows the large knurl nut used to secure the heavy bronze bells to their support post. A beautiful finial top.