Most visitors online was 1660 , on 12 Dec 2020
An astronomical train to demonstrate the movement of heavenly bodies? Sun, moon, known planets? Almost like an orrery??Okay...given no one guessed even though I know so of you know...It was made around 1575 and is the only known movement with 4 fusee from that era.
There are 4 trains each with fusee: going, hour striking and quarter striking trains. So that's 3 out 4 trains. The hint on the 4th train is the back plate which is missing two countwheels. You can see the witness marks quite clearly. The quarter striking countwheel is on the front plate. Anyone guess what the 4th train is?