Non-Vintage. As often found on a bottle of Champagne, NV refers to the grapes being harvested in different years yet used in the same bottling. As a wine does not adhere to the minimum percentage to be labeled with a vintage, non-vintage or multi-vintage (MV) will be used. In Champagne, this is a way that year over year consistency is established, as NV wines can be adjusted easier than a wine from a particular vintage