This article has an erratum: [erratum]
Sources of yearly quality ratings for Port vintages.
|(1) Berry Bros & Rudd||BBR||1–10|
|(3) Instituto dos Vinhos do Douro e do Porto||IVDP||0–1|
|(4) Michael Broadbent||MB||0–5|
|(5) Sotheby’s Wine Encyclopaedia Wine Encyclopaedia||SWE||0–100|
|(7) Wine Advocate||WA||50–100|
|(8) Wine Enthusiast||WE||50–100|
|(9) Wine Spectator||WS||50–100|
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