Found at WW1 traing camp.

[Jmann69]

It's about the size of a dime. About a 1/4" thick. Seems to be a cap from something. Six sides, like the head of a nut. Any ideas?

 

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[Jmann69]

Looks like a W with a C on both sides.

 

[mick56]

Probably from a tube of toothpaste, or something similiar.

 

[DCMatt]

Probably from a tube of toothpaste, or something similiar.

 

[Jmann69]

Sure could be! Thanks

 

[surf]

Invention of Paint Tube​

Hey Jmann,

Thanks for the good photos. Above's another possibility.

"According to this website, collapsible metal tubes were first patented in the U.K. and in the U.S. back in 1841. They were originally used to hold artist’s paint, making it easier for artists to travel with their art supplies and more easily do paintings on location in villages and fields. The Johnson brothers were innovators, and they seized on the idea of using collapsible tubes for Zonweiss, to give consumers more convenience and further ease of use.
There was a collapsible tube manufacturer in New Brunswick, New Jersey – The Consolidated Fruit Jar Manufacturing Company (despite its name, that company also made tins with shaker tops and collapsible tubes.) The Johnson brothers used them as their source — Johnson & Johnson was already buying fruit jars from them to package sterile surgical gauze and dressings, because the fruit jars could be hermetically sealed to keep the contents sterile…" http://www.kilmerhouse.com/2012/05/zonweiss-the-first-toothpaste-in-a-tube/

Here's another:

​

 

[nhbenz]

Well, only a few years late: