Most visitors online was 1660 , on 12 Dec 2020
That may be the problem, but I'd more suspect the glass being loose. If you have a Timesavers catalog, near the back is a great tutorial on how the restore these. Yours is different only in that it has a chain drive. The inner gear must be tightly cemented to the glass with contact cement. If it's loose it will not keep time and might either gain or lose. No lubrication on this clock!I was given a Jefferson Suspense clock that runs fine, but gains time. I read on a collector's web site that I have the wrong chain. Timesavers no longer carries them. Does anyone know where I can get on?
Thanks for the clarification...I now see that they are entirely different clocks made by the same company. I found that there are at least 8 different models made by Jefferson.Thanks for the response! It is in fact called a "Jefferson Suspense Clock" Steve