This $7000 Rolex datejust was exposed to seawater and movement was replaced but i saved it

a women contacted by a local woman with an amazing Rolex Explorer from the 90's that was left to her by her father. Unfortunately the watch got seawater in it on a day at the beach and had stopped running. After the local Rolex dealer, and even Rolex itself declined to work on the watch, watchexpert undertakes his most challenging restoration yet to try to get it back on her wrist!