Chanel Perle de Lune (916) is a neutral taupe with a metallic finish that is limited edition and retails for $34.00. In comparison, Marc Jacobs Beauty Pewter Please (110) is a neutral taupe with a metallic finish that is limited edition and retails for $26.00.
Marc Jacobs Beauty Pewter Please (110) is 90% similar — it is more shimmery, lighter.