Jump to content
CoinPeople.com

whats the best way to tell ifa 1990 no s mark penny is a proof penny?


galileo213
 Share

Recommended Posts

Please share its photographs with us. The 1990 No S Lincoln coming from an extremely popular Lincoln series is the only proof coin from 1909 till today that lacks a significant mint mark.

 

My impression was that proofs were made by the Philadelphia mint (hence no mint mark) through 1964. Am I having a moment of cranial flatulence here?

Link to comment
Share on other sites

  • 4 weeks later...

“In 1985 the U.S. Mint abandoned the practice of punching mint marks into working coin dies and instead, it began punching the mint mark directly onto the working hubs. However, the 1990 No S Proof Lincoln cent was inadvertently struck by a mint state die that had been processed as a proof die. This occurred because the Mint had shipped a mint state die to the San Francisco Mint without the die containing the S mint mark. Amazingly, the 1990 No S Proof Lincoln cents deceived both the Philadelphia and San Francisco Mint employees.” Source: http://www.pcgs.com/top100/coin9.aspx

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
×
  • Create New...