Coin Community Family of Web Sites
Like us on Facebook! Subscribe to our Youtube Channel! Check out our Twitter! Check out our Pinterest!
Username:
Password:
Save Password
Forgot your Password?


Welcome Guest! Need help? Got a question? Inherit some coins?
Our coin forum is completely free! Register Now!

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

First page | Previous Page | Last 15 Replies
 
To participate in the forum you must log in or register.
Author Previous TopicReplies: 278 / Views: 22,579Next Topic
Page: of 19
Valued Member
United States
266 Posts
 Posted 07/03/2020  9:13 pm  Show Profile   Bookmark this reply Add nautilator to your friends list Get a Link to this Reply
That's really neat about the niobium coin, I'll have to get that along with the polymer/metal ones they issued last year. A bit behind on modern things because of some recent purchases.

For example...




Yes, I got me one of those Polish sulfur medals. I might have a reliable way of getting more, if so I will make sure you can get one of them, CCC.

I also got me a Poessneck black leather/gold gilt notgeld, 1923. These things are fairly common (and pricey) but this one is particularly nice. The gold leaf is commonly broken or damaged on these.


Moderator
Learn More...
United States
89924 Posts
Pillar of the Community
United States
538 Posts
 Posted 07/30/2020  12:19 am  Show Profile   Check casualcoincollector's eBay Listings Check casualcoincollector's eCrater Listings Bookmark this reply Add casualcoincollector to your friends list Get a Link to this Reply
So here are some interesting things that I came across recently. Pakistan made some Cadmium containing silver commemoratives in the 1970's and apparently the US mint kept really good records of what actively circulating world coins were exactly made of as part of the "Annual Report of the Director of the Mint" and I came across the 1951/1952 copy of that report on google and it seems that all of the Occupation Zinc coins from Norway during WWII had a .2% Cadmium content. As seen in the links below.

http://www.chiefacoins.com/Database...Chaudhry.htm

https://books.google.com/books?id=O...m%22&f=false
Edited by casualcoincollector
07/30/2020 12:23 am
Moderator
Learn More...
United States
89924 Posts
Valued Member
United States
266 Posts
 Posted 08/07/2020  02:45 am  Show Profile   Bookmark this reply Add nautilator to your friends list Get a Link to this Reply
Those director's mint reports look like they're really useful. I arbitrarily chose another one -- the one from 1959 -- and in it I see that Italian coins made of "bronzital" include 0.4% titanium in the alloy.

I normally don't bother with anything less than 1% but there are probably some other hidden gems in there.
Pillar of the Community
United States
538 Posts
 Posted 08/07/2020  03:16 am  Show Profile   Check casualcoincollector's eBay Listings Check casualcoincollector's eCrater Listings Bookmark this reply Add casualcoincollector to your friends list Get a Link to this Reply
Thanks for the information on the Italian 20 Lire I hadn't come across that one yet. I hear your point on not including things that have less than one percent in the alloy but from my point of view if I plan on including plated pieces such as the chrome plated WWII Canadian Nickel, which definitely has less than one percent chrome I should also need to include the minor alloys provided that they have a metal that isn't represented somewhere else in the set and provided that it is not an impurity in the alloy. So, I will be adding a Norway occupation 50 Ore and a late 1950's Italian 20 Lire to my set. The titanium in the 20 Lire is definitely there by design and I believe that the cadmium in the Ore coins is also there by design since there are other zinc coins from that time period that do not list cadmium in the same report and cadmium is added to zinc to increase its corrosion resistance.
Edited by casualcoincollector
08/07/2020 03:43 am
Valued Member
United States
266 Posts
 Posted 08/07/2020  10:05 am  Show Profile   Bookmark this reply Add nautilator to your friends list Get a Link to this Reply
There's a lot there to be had. The 1959 report mentions that a number of South Africa coins had 2 or 5% manganese in them. Surprised me quite a bit as I thought our nickels were the only ones.
Pillar of the Community
United States
538 Posts
 Posted 08/07/2020  3:47 pm  Show Profile   Check casualcoincollector's eBay Listings Check casualcoincollector's eCrater Listings Bookmark this reply Add casualcoincollector to your friends list Get a Link to this Reply
It looks like the Italian "Bronzital" only contained titanium from 1957 through 1967 then the titanium was replaced with nickel in 1968.

https://books.google.com/books?id=g...m%22&f=false
Edited by casualcoincollector
08/07/2020 4:15 pm
Page: of 19 Previous TopicReplies: 278 / Views: 22,579Next Topic  
 
To participate in the forum you must log in or register.



Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2020 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited.
Contact Us  |  Advertise Here  |  Privacy Policy / Terms of Use

Coin Community Forum © 2005 - 2020 Coin Community Forums
It took 0.77 seconds to rattle this change. Powered By: Snitz Forums 2000 Version 3.4.05