Message:

<p>[QUOTE=&quot;mlov43, post: 2043435, member: 16729&quot;]88% copper, 12% zinc (the TPGs call this variety &quot;Bronze&quot;).&nbsp;&nbsp; The Korean Mint switched to a lower copper-ratio halfway through the minting of the 1970 strikes to 60% copper, 40% zinc in response to rising copper prices in the late 60s.</p><p><br /></p><p>And what is with the spotting???&nbsp;&nbsp; I come across all kinds of US, British, and Canadian (as well as other nations&#039;) copper coins from this same era that don&#039;t get this brown spotting to which the South Korean copper-based coins (5 and 10 Won) are susceptible.&nbsp; In fact, it is very hard to find these coins in MS that do NOT have brown spots.&nbsp; Not fingerprints, mind you.&nbsp; Spots.&nbsp; Seems to be from air moisture(?)</p><p>If you can find these in &quot;spotless&quot; condition, get ready to pay a premium...</p><p><br /></p><p>Why do these coins get spots?&nbsp; Was it the quality of the coining metal?&nbsp; Like the number of licks required to get to the center of a Tootsie Pop, &quot;the world may never know...&quot;[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in