All parts are original to the piece or are authentic to the time period of the serial numbers.Photos are provided so that the discriminating horologist may verify the condition of each part. Any questionsgladly answered. The platform is of the type with the straight arm balance original to the WWII period.Later balances had tapering or curved arms. This clock has recently been taken down and has been meticulously serviced with the finest lubricants. It will give many years of accurate service if kept in a clean, dry location, never in direct sunlight, never in dusty, smokey,or windy areas. Original instructions are to wind once a week at about the same time each week. Accuracy has been at about 30 sec./week with regulator centered. Suggest you allow clock to run for a week without adjusting. If needed, move adjuster only 2 lines at a time, using wood or or plastic instrument. Will provide a well fitting Timesavers key. According to the Chelsea Clock Museum, this serial number is between 1940-1944. If someone has accessto more precise date information, I will be happy to publish same to make this listing as accurate as possible.The winning offer is the full price, no surprises, no nonsense. Shipping and insurance are provided by myself. I am an old school bayer, everything is owned, photographed, packed and shipped by myself. No 3rd parties, no scams, no packing and handling fees. There is a 14 day return period, provided the movement is not removedfrom case. Clock will be double boxed, fully insured, and signed for. Have never had any problem yet, but ifpackaging appears damaged, please open in presence of Post person. , happy offerding!