Last modified: 25 October, 2005
| Code | Media | Comments |
| BR | Turned Brass | |
| IA | Injected Acetate Plastic | |
| IP | Injected Polystyrene Plastic | |
| PE | Photo-etched metal | usually brass |
| RN | Resin | |
| SM | Stamped Metal | |
| VF | Vacuformed Plastic | |
| VL | Vinyl Plastic | |
| WM | White Metal | |
| WD | Wood |