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Question About Unusual Coinage Materials/Post Your Unusual Materials Coins!

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JohnQPublic's Avatar
United States
81 Posts
 Posted 04/02/2026  11:23 pm  Show Profile   Bookmark this reply Add JohnQPublic to your friends list Get a Link to this Reply
This coin was struck in Rhenium, Zirconium, Cobalt, Hafnium, and Tantalum

https://en.numista.com/catalogue/se....php?id=3631

Mine weights 6.6 g (close to the stated 6.8 g in the link), pretty much conforming it is the tantalum version (I purchased it as tantalum). Tantalum had a series of 100, the rest 10 or less.
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JohnQPublic's Avatar
United States
81 Posts
 Posted 04/03/2026  12:54 am  Show Profile   Bookmark this reply Add JohnQPublic to your friends list Get a Link to this Reply
I have this coin from Zinkann also. This one is a Vatican fantasy coin, 999 silver, 30mm dia, 1.4mm thick, 8.5g.

2007 10 Euro Josephus

Question-About-Unusual-Coinage-Materials/Post-Your-Unusual-Materials-Coins!
Question-About-Unusual-Coinage-Materials/Post-Your-Unusual-Materials-Coins!
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Errers and Varietys's Avatar
United States
75418 Posts
 Posted 04/03/2026  10:54 am  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
Very nice JohnQPublic.
Errers and Varietys.
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Dearborn's Avatar
United States
98963 Posts
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jbuck's Avatar
United States
190135 Posts
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United States
332 Posts
 Posted 07/01/2026  01:44 am  Show Profile   Bookmark this reply Add nautilator to your friends list Get a Link to this Reply
Question-About-Unusual-Coinage-Materials/Post-Your-Unusual-Materials-Coins! Question-About-Unusual-Coinage-Materials/Post-Your-Unusual-Materials-Coins!

This medal was issued by the Numismatic Society of Vienna in 1880. It features Joseph Hilarius Eckhel, sometimes called the Father of Ancient Numismatics for being one of the first to publish research on the matter.

And wouldn't you know it, the medal says AES PRAEBVERVNT NVMMI ANTIQVI CONFLATI i.e. these medals were made with melted-down Roman bronze coins.


Question-About-Unusual-Coinage-Materials/Post-Your-Unusual-Materials-Coins! Question-About-Unusual-Coinage-Materials/Post-Your-Unusual-Materials-Coins!

Tenino's covid money doesn't really need an introduction or explanation. I called their City Hall, they told me they were made of sitka spruce, much like many of their originals.


Question-About-Unusual-Coinage-Materials/Post-Your-Unusual-Materials-Coins! Question-About-Unusual-Coinage-Materials/Post-Your-Unusual-Materials-Coins!

May as well add in another lava medal. This one shows Luigi Palmieri, director of the Vesuvius Observatory during the late 1800s.
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Errers and Varietys's Avatar
United States
75418 Posts
 Posted 07/01/2026  06:24 am  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
Interesting additions, nautilator.
Errers and Varietys.
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HondoB's Avatar
United States
25767 Posts
 Posted 07/01/2026  08:19 am  Show Profile   Bookmark this reply Add HondoB to your friends list Get a Link to this Reply
Fantastic examples, nautilator!
Inordinately fascinated by bits of metal with strange markings and figures
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jbuck's Avatar
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