Only 10 2000 p Experimental Rinse (ER) Anti Tarnishing Agent Sacagawea one dollar coins are known. Discovered this coin early at their 1st introduction say mid June or July 2000. And during my research on this coin I discovered several interesting things about this Sacagawea coin which are covered below. Please take a moment and hit the bottom right red rectangle on my video to subscribe. By Subscribing it will help Me help You stay informed about my research and upcoming informative videos on more surprise Sacagawea coins that I collected and the unexplained and nearly impossible connection between multiple "p" / "d" / "p" Mint Marks and another interesting connection I discovered between two coins That came out of a US Postal Service vending machine in the same hand full as pocket change. So far I have only run across two 2000 p experimental rinse "ER" Sacagaweas certified as "ERs". The 2001 ERs seem to have a different chemical coating and or heat treatment than the 2000 P ERs. Another Sacagawea dollar site has a photo of a 2000p Sacagawea Experimental rinse Coin that is very similar if not exactly the same as this coin and a photo of a more brown colored Experimental Rinse Sacagawea. I have also found some slabbed 2001p Experimental Rinse Sagcagaweacoins that are very similar in color, finish and description if not exactly the same as this coin. This Sacagawea coin could be on a experimental metal alloy planchet or may had an Experimental Anti-tarnishing Agent applied to the surface of the metal either before the planchets were cut or to the planchets after being cut or maybe both ways were tested, but it weigh is correct. This dollar coin has a slight green brown copper color, with a matte like patina and no wear with very few bag marks if any. The rim is slightly higher around part of the edge, maybe brockage from light multiple strikes. The mint does admit conducting engineering and metallurgical tests but cites trade secrets and minting security for not releasing all the chemical make-ups or of all the alloys or anti-tarnishing agents tested, used or rejected. The Martha Washington test Dollar was used to test different alloys and anti-tarnishing agents to help in the final manufacture of the Sacagawea Dollars. Maybe this coin missed the 1st or 2nd chemical in the anti-tarnishing agent process which gave it this more rare surface than the fully processed experimental rinse coin. A metal formation that looks very similar to a flattened D is quite interesting, and is located in a similar location to a D on a quarter or maybe a "P" was struck over and off center "D" Sacagawea coin. Some Sacagawea coins have been discovered with the front surface of a quarter stamped in to the coin. They are called Mule coins. I will be actively researching for any new theories about just what may have happened to this coin, so if you subscribe you will get notice of any new information that I may come up with for my next video. Please keep the comments coming about what you discover, they really help. Thank you.
Best Tutorial on how to collect modern rarity / variety error coins.
You can get your coins graded by submitting them to these companies PCGS - SGS - SEGS - ANACS - NGC - AACGS - IGC just google for their official site.
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