| Type | Basic design type |
| Date | Range of dates for which examples of a type have been found on records and pianola rolls |
| Issues | The number of distinctly different values, colours, overprints etc which have appeared. This includes variations in watermark, perforation and value type (printed, handstamped, typewritten, manuscript) |
| Size | Dimensions in mm, width x height |
| Perf | Normal perforation(s) found on this type |
| Rarity | refer Rarity rating guide |
| Design | A brief description of the design. |
©Adam Miller 1997