METAS certification after service?

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Hello all I have a seamster 300m 2018 I sent in for service because it had a cosmetic issue. Is there a significant difference in its accuracy after they open and assemble it again? Thanks.
 
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It will run fast without the lint weighing it down, but not enough that I’d worry about it. 👍
 
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The watch will be serviced and brought back into the same tolerances - the rate may end up different but will fall inside what the tolerances are for METAS.