We are talking about "apples and oranges" here. I am talking about "vintage year" as it applies to the winemaking industry in general and not the hobby. In that industry,the "vintage" refers to the year that the grapeswereharvested.
See:http://en.wikipedia.org/wiki/Vintage "<?
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vintage wine is one made from grapes that were all, or primarily, grown and harvested in a single specified year. Most countries allow a vintage wine to include a portion of wine that is not from the year denoted on the label. In Chile and South Africa, the requirement is 75% same-year content for vintage-dated wine. In Australia, New Zealand, and the member states of the European Union, the requirement is 85%. In the United States, the requirement is 85%, unless the wine is designated with an
AVA, (American Vitcultural Area e.g., Napa Valley), in which case it is 95%. Technically, the 85% rule in the United States applies equally to imports, but there are obvious challenges in enforcing the regulation."
See also: http://www.frenchscout.com/wine-vintages"Basically the
vintage refers to the
year in which the grapes were harvested. This notion also hints at both the
weather conditions in which the grapes grew and the
quality of these grapes."
In actual practice in the industry, the year of the harvest and the year of production are in virtually all cases the same, so there islittle cause for confusion. Further, regarding the talent of the winemaker, I suppose that it is possible for a commercial winery to botch an entire harvest, but this is very unlikely.
Hobbyists who want to indicate
when they made a particular wine as the "vintage" are free to do so. In the interest of accuracy, they should also include the month.