These is a older metal New Mexico State Line License required for hunting or fishing, issued by the Department of Game and Fish. This sign is a  warning individuals that is illegal to engage in hunting or fishing activities within the state of New Mexico, with out a license and to ensuring compliance with regulations and conservation efforts. It serves as a permit for outdoor enthusiasts to enjoy recreational pursuits while following the guidelines and restrictions set forth by the Department of Game and Fish. This sign would be put on the New Mexico, Colorado state line. I purchased this single at a estate sell.