Francis Bacon- Three studies for a portrait of John Edwards

Three photo-lithographs in colours on cardboard, 1980.
Each signed, titled, dated and inscribed with the panel number in felt tip pen on the reverse.
Size of cardboard, (3x): 29.7 x 26.7 cm.
Provenance;
- Collection of John Edwards (1949-2003), London; then by descent.
- Private collection London.
- Christies, London

Very scarce work by Francis Bacon.