Gravity Well – Designed by Harry Nelson

The Collector’s Pedigree

​Presenting the Gravity Well, a masterpiece of mechanical geometry designed by the late, legendary Harry Nelson. Produced in limited quantities by Bits and Pieces, this puzzle is widely considered a "must-have" for fans of Nelson’s work and coordinate motion puzzles. Unlike standard mass-market puzzles, this heavy-metal version offers a tactile, "executive" feel that looks as much like a piece of modern art as it does a brain-teasing challenge.

​A Three-Tiered Challenge

​The Gravity Well is unique because it isn't just one puzzle; it is an escalating series of three challenges of increasing complexity:

1. ​Level 1 (Entry): Interlock two rings with the brass core trapped inside.

1. ​Level 2 (Intermediate): Interlock all three rings with the core sitting on the exterior.

1. ​Level 3 (The Gravity Well): The "Master" challenge. Successfully coordinate all three interlocking rings to trap the core perfectly in the center of the sphere.

​Condition & Specifications

• ​Materials: Precision-machined aluminum rings with a lustrous brass core.

• ​Stand: Includes the original wooden display base, featuring the specific recessed carving required to keep the completed sphere from rolling.

• ​Size: Approximately 3.75" x 3.75".

• ​Condition: This example is in excellent collector-grade condition. The metal surfaces show minimal wear, maintaining the tight tolerances and smooth action essential for the "coordinate motion" solve. (No heavy scuffing or oxidation often found on older metal pieces).

​Why Bid?

​Since Harry Nelson’s passing, his original designs have seen a steady increase in value. The "Gravity Well" is rarely listed on the open market and is a cornerstone for any collection focusing on 3D interlocking puzzles or precision metalwork.

Shipping paid by buyer and determined at close of auction.