What Is the Difference Between Silver BU and Silver Proof? the Technical Specifications.?
Posted by silverproofer in American Eagle Silver Proof FAQ, tags: between, difference, Proof, Silver, specifications., technicalQuestion by Edward: what is the difference between Silver BU and Silver Proof? the technical specifications.?
I think BU stands for bullion? Silver Proof is more expensive than Silver BU. I think Proof (999) Silver is pure silver? Sterling Silver is 925 silver. Appreciate any inputs.
Best answer:
Answer by carbonates
BU is an abbreviation for 'bright uncirculated'. It is applied most often to coins struck for circulation that do not have special methods of striking or special handling.
Proof is a special method of striking a coin that may involve several blows from a specially prepared planchet. Proof coins are generally not circulated and are sold only to collectors. See:
http://www.pcgs.com/lingo.chtml?Letter=P
Since Bright Uncirculated and Proof refer to the method of striking the coin by the mint, they have nothing to do with the silver content. A proof coin can have any amount of silver, or none at all.
You will have to refer to the specifications on the specific coin to know the difference in silver content between a BU coin and a Proof of the same coin. It is not unusual for a coin to have a higher silver content for a Proof version than a circulating BU, but it is not always true.
PCGS is a coin grading service that has a lot of information on the web page:
http://www.pcgs.com/coinguide/guide.chtml
NGS is another coin grading service:
http://www.ngccoin.com/
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