| Name | Die Post-Gustl (AH) |
| YoB | 1906 |
| Sex | mare |
| Colour | grey |
| Sire | Trevillian (US), 1889 |
| Dam | Gustine (AH), 1900 |
| Damsire | Quartermarch (US), 1889 |
| Breeder | Graf Simon Wimpffen |
| Birthplace | Fahrafeld a. d. Triesting, Bez. Baden, Nieder-Österreich (Pottenstein, Niederösterreich) |