The pendulum bob is original The key is a replacement. The clock was not tested but ran few minutes chimed on the hour and 1/2 hour. The case has a few scruffs but nothing that shouldn't be expected from 100+ year old clock.
The clock uses the model 89 movement and has the signature "ST" hands. I would leave it original, but it would also make a great base for a full restoration. Its priced to sell so don't miss it! Thomas Tambour Style Mantel Table Shelf Clock 8 Day Time and Strike 89.
This item is in the category "Collectibles\Decorative Collectibles\Clocks\Desk, Mantel & Shelf Clocks". The seller is "borasup60" and is located in this country: US.