An international charity raffle to raise funds for research into Alzheimer's disease is set to hand one lucky winner an original Picasso painting worth over one million euros, organisers said on Tuesday.

A total of 120,000 tickets will be sold online at 100 euros each, with the ceremony to award the painting set to be live-streamed from auction house Christie's in Paris on April 14.

Tickets are on sale at www.1picasso100euros.com with the sale backed by Picasso's family and foundation.

The painting is a portrait of Dora Maar, one of Picasso's muses, produced by the artist in 1941 and titled "Tête de femme" ("Woman's head").

Proceeds will be donated to the Alzheimer's Research Foundation.

Two other similar raffles of Picasso paintings took place in 2013 and 2020 by the same organisers, led by French journalist Peri Cochin.

A 25-year-old American from Pennsylvania won the first, while an accountant from Ventimiglia in northwest Italy claimed the second after being given a ticket as a Christmas present by her son. (AFP)