u/LavishnessNo7502

Got this watch that belonged to my great grandfather — Rolex King Midas Cellini in white gold. Looking for a rough value estimate.
He bought it new in the 70s. It’s the King Midas Cellini, all in white gold, and it came in the original amphora/urn-shaped box — unfortunately the box got lost over the years and multiple house moves, which I know hurts the value a bit.
The watch itself works perfectly and is in almost perfect condition. I’ve been searching online but can’t find an exact match to pin down a value.
Does anyone have a rough idea of what this might be worth? Any help from the vintage Rolex community would be greatly appreciated!