The idea that having a 'full set' dramatically boosts your Rolex resale value...

https://smoothdecorator.com/do-you-have-to-declare-a-duty-free-watch-when-you-re-enter-the-united-states/

The idea that having a 'full set' dramatically boosts your Rolex resale value is more myth than fact. The real must-have? The warranty card. Boxes look nice but don't carry much weight with serious buyers