Carlsbad Caverns Key Chain. A Bright Copper Colored Metal Key Chain with a Mesh Connector and Key Ring. Front of Fob shows a Stalagmite and Stalactite Inner Cavern with Carlsbad Caverns Below. Back shows Reverse View and Marked M. A Small Oval Metal Tag is Connected at Top of Fob. One Side reads Carlsbad Caverns while the other side shows a small Sterling. The Fob is About 1 3/8 Inches Tall and About 3/4 Inches at Widest. 3/8 Inches at Widest by 1/4 Inches at Tallest. Unknown Vintage, Unknown Bright Copper Colored Metal. Marking means it was possibly made in the USA. Used and Certainly Not Abused.