There is a lot wrong with that estimate. Firstly, case number 143.8111 doesn't exist. Secondly no 351 bumper movement was made as late as 1959 and with a 17.99m serial, it would have used a 5XX rotor auto movement surely (I note that billed him for a new rotor, further backing this up). It doesn't add up, based on that paperwork, I wouldn't touch it even if the dial had been left be!
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