Skeleton Key Square Bow Metal Sign

About the Square Bow design

A square of solid steel with softly rounded corners forms the bow, and its round hole sits off center, pushed toward the left edge. A slim shaft runs out to the right, threaded with three swellings that change shape as they go. The first comes to points like a spindle, the second is a plain round bead, and the third is a squared-off block that repeats the bow in miniature. Past that block, the shaft finishes in a short rounded stub with no teeth at all.