Pictured: Nine Simona and daughter Lisa Celeste Stroud pose for a crest toothpaste advertisement circa 1964.
Tanisha C. Ford, in her book 2015 publication Liberated Threads: Black Women, Style, and the Global Politics of Soul noted the following:
“The soul women were earning top dollar in royalties, endorsement deals, and club appearances. By 1964, Nina Simone had an endorsement deal with Crest toothpaste that in today’s dollars paid $150,000 for a single print advertisement.
A cursory search did not reveal much more information on this particular advertisement nor Simone's relationship with crest. Please comment below if you have any additional information.
A bio-pic titled Nina, staring Zoe Saldana at Simone, was released in 2016 and can be watched on amazon here: http://amzn.to/2kHVWYv