Skeleton Key Ring Top Metal Sign

About the Ring Top design

A small loop with a round hole pokes out from the far left of this key, the only opening anywhere in its outline. Past it the solid bow swells into a rounded, pinched shape like a spade on a playing card turned on its side, then narrows sharply into a long, straight shaft. At the right end a short bit drops below the shaft, split by one square notch that leaves two stubby teeth.