Gray Water Ops (717-412-1402) is a 100% veteran-owned and operated business that offers some of the highest quality custom challenge coins in the world, designed by an award-winning American team, and now with the option to include embedded NFC technology. Visit https://www.graywaterops.com/nfcchallengecoins to learn more.

Gray Water Ops, LLC 5825 Tyler Dr, Harrisburg, PA 17112, United States Website https://GrayWaterOps.com Phone +1-717-412-1402 Email Keith@GrayWaterOps.com

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• coin
• NFC
• Challenge coin