Adding 64 US dollar coins to my collection (Year/Mint)?

Hi,

is there any reason to have the year and mint on the edge of those coins? 

Even on my 64 UNC coins I found two, where those crucial data were illegible. Don't worry, since they came in pairs D & P, I could deduce the year and the mint, but that's almost never the case, so I was just lucky.

You did not specify which dollar coin type you are referring to so this response is generic in nature. Why exactly, who knows other than the U.S. Mint? Although intended for circulation, they generally don't circulate very much as the American pubic does not generally use them for commerce and daily transactions. Most end up in jars or collections such as what you are doing. Some edges are purposely being filed down to feign “error” coins and the implication that it is now valuable. As noted in the link below, they also once had text on the edge and changed that. See link below for more complete information.

 http://www.smalldollars.com/dollar/page33.html

Sorry the presidents, innovations and states, all the “Gold” type dollars…..

Thanks for the interesting link.

It wasn't the US Mint that decided it.  The Native American $1 Coin Act (Public Law 110–82—Sept. 20, 2007) that authorized these coins states:

EDGE-INCUSED INSCRIPTIONS.—
‘‘(i) IN GENERAL.—The inscription of the year of minting and issuance of the coin and the inscriptions ‘E Pluribus Unum’ and ‘In God We Trust’ shall be edge-incused into the coin.
‘‘(ii) PRESERVATION OF DISTINCTIVE EDGE.—The edge-incusing of the inscriptions under clause (i) on coins issued under this subsection shall be done in a manner that preserves the distinctive edge of the coin so that the denomination of the coin is readily discernible, including by individuals who are blind or visually impaired.

Clause ii makes no sense to me but they failed it. Maybe the Mint had input into the requirements but since it made their production more difficult with the added step of the the edge text I don't know why they would push for it.

Thanks.

For sure, it makes the collectors work harder and sometimes without a valid result.

that preserves the distinctive edge of the coin so that the denomination of the coin is readily discernible, including by individuals who are blind or visually impaired

Had to laugh when I read that.

The endless quest in catering to myriad demographics in the name of political correctness by politicians serves nobody in the end and this is just one example of the results. The mint must then manufacture $1 coins that the public doesn't want, use, value. nor appreciate. Not even by Native Americans or the visually impaired.