🧩 Yin & Yang is a nickel-plated metal brain teaser puzzle designed by Doug Engel. The puzzle includes contrasting black and silver pieces that form two interlocking yin-yang shapes when assembled. A compact hands-on logic puzzle for collectors, desk display, gift baskets, or anyone who enjoys classic metal brain teasers.
Item is sold as shown in the photos. Packaging may show shelf or handling wear.
