Can someone tell me how you tell if a skeleton clock is an older one or is one of the Chinese repros. I bought one today at an estate sale and it appears old. It is unmarked, single Fusee drive and strikes once on the bell on the hour. The base is black ebonised wood which looks old. The glass dome has lots of bubbles and waves, but is not tight on the base, so I suspect the dome may be old but not original. It runs great, but was such a great deal I couldn't pass it up.