The edge pictures are too blurry to see what you have, but it isn't edge lettering. Edge lettering wasn't used on US small dollar coins until 2007 and didn't appear on the Sacagawea coins until 2009.
While there is something faint in the edge, mostly I just see pixelization and polarization rainbows from what appears to be a scope screen. If it is, please use the memory card or USB connection to take a proper picture and upload that.
My guess on the "numbers" is Pareidolia imposed on scrapes and stains, but a better image would dispel any questions.
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