An English Congreve clock or rolling ball clock – Staetshuys Antiquairs
Lot - Congreve Rolling Ball Clock (Replica)
Vintage Arrow Handicraft Corp Electric Clock Machine Rolling Ball Clock NIB NEW | eBay
A novelty clock fresh off servicing, a replica Congreve rolling ball clock, quite mesmerising to watch and a great showpiece, see photos of before and... | By Timepiece CreationsFacebook