I'm looking for advice from more experienced restorers on what to do. This is a Seth Thomas tambour case for a 124F chiming movement. The back of the hammer mechanism is stamped 4610 which indicates October 1946 and there is a penciled date of 4/22/47 on the bottom of the case, visible in the second picture. The biggest issue is that there is a chunk of wood about half an inch wide missing from the floor. What would you do? I think my best option is to replace the floor. The original floor is about a quarter inch thick. Given that the floor serves as a sound board for the chime rods, what kind of wood is best? Is plywood acceptable? The second photo shows the two holes for mounting the chime rods on the right. One of the two bolts was missing but I've found a suitable replacement (the one on the left in the fourth photo). The patina on the replacement bolt doesn't match that of the original, but it's the right length and thread size so I'm gonna use it - I'll put it in the back so it won't show as much.