A Sign is a Fine Investment
- Blwyddyn: 1983
- Gwlad: United Kingdom
- Genre: Documentary
- Stiwdio: Arts Council of Great Britain
- Allweddair:
- Cyfarwyddwr: Judith Williamson
- Cast: Fiona Trierr, Maryanne Gordon, Terry Hardy, Nicholas Robinson, Sara Scodbo, Sam Smith
