According to John's records this is one of four known early Harder clocks with the "W C" marking and was made in the first year of production by the Wintermantel-Shatz partnership. I believe that was 1882. Many thanks to Mr. Hubby for the info. Finials were not fully seated and are now frozen in position so I left them as is. Fork is a later addition but it runs well with it so will leave it until I locate the appropriate old one. Dome most likely a replacement. Overall it has survived in fabulous condition.
Very nice historical clock...looks great! According to John's Torsion Times article, the serial numbers 1-610 were with this patent 2437. It's not clear from the picture, but John mentions "W G" stamped on the back of the clock. These clocks were made from May 1882 to Jan 1883. Lots more info here: Anton Harder Disc Pendulum Kurt
Nice clock JK! The crown and finials are from a Hauck clock from serial number 16000 or higher and they are left hand threads. The originals would look like this: Eric
That is interesting as i asked John if he thought the top piece was original and he indicated it matched the others he had on file. The other Harder clocks i have seen use the style you show so until further documentation from John with possibly matching photos it is an open question.
Although not exactly as your photo this appears to be more correct. Found in junk box at seller's shop.