✅ SOLVED Squished all-metal vial/container??

[Detector mom]

Every bit of this is metal, even though the way it's squished makes it appear, at first glance, like some other material.

 

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[DizzyDigger]

It's the metal top from a tube of some kind of yet-to-be-determined
substance.

Are there any letters or markings on it?

Larger images would help..

 

[ticndig]

it looks a lot like part of a vintage tooth powder can

 

[Detector mom]

BINGO! You are right: