Movado's are not my cup of tea, but that does not mean they are not nice enough watches. His mom bought him the watch and he should keep it in the drawer until it's time for him and his family to go to dinner.
Then he can wear the Movado to show his mom just how much he appreciates her gift.. Selling it, you will get very little to nothing for it. Better off keeping it.

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"When two people agree on everything, one of them is not necessary" - Arliss