| Serial number | None, made in Japan |
| Accessories | Plastic pouch, bad condition |
| Manual: Casio fx-501P Bedienungsanleitung (German, French), undated | |
| Manual: FX-501P/FX-502P Programmbibliothek (German), undated | |
| Instruction sheet on how to program Heron's formula for triangles | |
| Quick reference card (German), bad condition | |
| Quick reference card (French), good condition | |
| Keyboard overlay, bad condition | |
| 2x small cards with conversion tables and physical constants (German and French), good condition | |
| Condition | Average. Scratches on the back, color worn off around the edges. A heavily used unit! |
| Repairs, Comments | |
| Acquired | 8.3.2003 |