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I have the Peli case from casefarm.. it’s burly as you can imagine but the reality is I’m not transporting 6 watches anywhere so overkill.. the clasps take significant force to close with the outcome being I leave the case open most of the time (and risk the whole thing getting knocked over by rampaging kids) .. therefore it’s neither really protecting my watches nor displaying them.
The Case Farm do Peli cases with inserts for watches if that's the sort of thing you're after.
https://www.thecasefarm.co.uk/watch-cases/
For general home use, the Wolf stackable trays are reasonably priced and well made, but they go in and out of stock a lot.
https://www.wolf1834.com/watch-boxes/6-piece-watch-boxes