This is a seven auction for what looks to me to be a Lenzkirch pendulum that I'm guessing either went into a spring driven vienna regulator or free swinger wall clock. Very fancy victorian pendulum. Overall length is 16 7/8". And the bob itself is quite large measuring 7 1/2" L x 4 1/4" W. Made of solid brass. Very impressive piece. Item is being sold as is. Final sale. No returns. I'll be happy to answer any questions. Successful bidder pays for shipping & merchandise will only be dispatched after payment made in U.S. funds has cleared bank. Payment is expected within 7 days of auction close.