Sigla (sing. siglum) are abbreviations for the provenance and current location used to identify ancient Egyptian coffins. The number signifies the museum sequence, the preceding letter(s) the provenance, and the trailing letter(s) the current location. In practice, the location may have changed since last publication because there is no "authority" continuously updating the sigla. Also, some authors have introduced other systems for referring to coffins.
The major works which deal with sigla are: de Buck (1935), Lesko (1979), Willems (1988), and (for Asyut coffins) Zitman (2010).
| Letter | Provenance |
|---|---|
| A | Aswan |
| G | Gebelein |
| S | Asyut (Siutian) |
| T | Thebes |
| X | Unknown |
| Letter(s) | Current (or last recorded) Location |
|---|---|
| Bas | Basel, Switzerland |
| C | Egyptian Museum, Cairo. May have since moved to the new GEM, the NMEC, or the Nubian Museum in Aswan |
| Chass | unknown; instead reference publication Chassinat and Palanque (1911) |
| Hil | Roemer- und Pelizaeus-Museum, Hildesheim, Germany |
| L | British Museum, London |
| Mal | Mallawi Antiquities Museum, Mallawi, Egypt |
| P | Musée du Louvre, Paris |
| T or Tor | Museo Egizio, Turin, Italy |
| Tü | Castle Museum Hohentübingen, Tübingen, Germany |
| Vien | Kunsthistorisches Museum, Vienna |
| X or Y | Private collection and/or location unknown |