Symbol Jigsaw Piece Metal Sign

About the Jigsaw Piece design

Only the bottom edge runs straight. A near-complete circle rises off the top on a pinched neck, and a second circle of about the same size curls in from each side, every one of them broken by a small gap where the square's own edge cuts across it. Drawn in one even stroke rather than filled, the tab and the two sockets sit like three rings hung on a plain frame.