Vintage 400 day anniversary clock spares and repair

Please see photos for details.  Approx 11 inches tall. German make.  Unfortunately I have just broken the dome when lifting out of storage, crack is about 3 ins high.  Complete with key, instruction book and another adjustment (?) tool taped to leaflet.  Base is corroded a bit and a small dent where I dropped it.  The bits inside are fine as have been sealed by the dome.  Nicely decorated pillars.  Not sure if there should be something in the clear tube to connect with the pendulum (if so, I can’t see anything or it is missing).  I don’t know about clocks so if there is anything you need to know please ask.  I have given best description I can and as many photos as allowed.

Sensible offers considered!

Price includes postage or could be collected form Rochester or Sidcup area.