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Ironically, you could hoard zinc (and copper) in the form of US pennies. 1981 and older pennies are copper. 1982 and newer are mostly zinc. The copper ones are worth more in terms of metal value.

Whoa! Great idea! Thanks!

yep!! I keep all my pre 1982 pennies for that exact reason #highfives

Lucky you guys, our Canadian penny is long gone.

What if you're not in US?

IIRC I saw listing on cbmint.com for copper rounds and zinc bullion. You may want to check.

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