Lindsay Nivens-Frosini is a certified member in good standing with the Appraisers Association of America (AAA), the oldest nonprofit association of personal property appraisers in the United States. Her career in the art world spans more than 25 years, in the United States and abroad.

As co-owner, with her late husband Gino Frosini, of the prestigious Dow and Frosini frame gallery in Berkeley, California, she developed deep expertise in frames and frame restoration. She holds a degree in History from the University of San Francisco and a degree in History of Art and Museum Studies from the University of Florence, Italy. While researching her thesis, she discovered a "lost" work by the 19th-century Florentine sculptor Aristodomeo Costoli in a noted English collection.

During three decades based in Italy, Ms. Nivens-Frosini collaborated with the Florentine gallery SanZanobi, translating art books and articles and building lasting relationships with art experts. Extensive travel throughout Europe, the British Isles, the Middle East, Mexico, and Asia has informed her research and kept her attuned to shifts in the art market.

As Director of European Art and Registrar at Montgomery Gallery in San Francisco, she conducted numerous appraisals, contributed to the gallery's lecture series, and helped organize and participate in the Los Angeles Art Show, the San Francisco Fall Antique Show, and the European Fine Art Fair (TEFAF) in Maastricht, the Netherlands.

LNF Fine Art Appraisal Resource specializes in 19th-century European paintings, drawings, and sculpture, with broader experience spanning Old Master through 20th-century European and American art, period frames, photography — particularly the work of Dorothea Lange — and California and Western fine art.