What are these boxes?

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Hello all,
I’ve seen collectors often store their single watches within these special clear polymer storage boxes.
I haven’t been able to find any yet during google searches.
Any idea what they’re called/ referred to as? And where they can be obtained from?
Regards
Al
 
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Speaking of containers, anyone know where people get those dial holders with cones in the middle to hold pieces without damage?
 
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You will find all shapes and sizes on Bay - start with "small plastic storage boxes" and refine from there