OFFICIAL PB APPAREL ca. 1950 hr>Note that only the top two buttons of the jacket are buttoned. English sartorial etiquette dictates that the 3rd, or lowest, button should NEVER be buttoned. br>This is known as the "S.A.N. Rule": br> Top button = Sometimes br>2nd button = Always br>3rd button = Never! br> br> i>PB ettiquete dictates that the top, or 1st, button should only be buttoned when the 1st drink is finished, the 2nd when the 2nd is finished, and the 3rd should NEVER be buttoned because the 3rd drink should NEVER be finished. /i>