| Designer | : | Stewart Coffin |
| Craftsman | : | Stewart Coffin |
| Category | : | Interlocking |
| Pieces | : | 12 |
| A simple four-piece puzzle. An experimental version is shown in the bottom photograph. He made 1 in 1988. Number 86X in his numbering system. Stewart made 4 in 1988. Number 86 in his numbering system. | ||