Abstract: A package for glassware and the like formed from a single blank of sheet material having folding lines and cuts therein. The package is convertible from a closed protective rectangular box to a display package having reduced width side walls and being substantially open at its side opposite its back wall except for a narrow article retaining wall portion. At its end wall remote from the retaining wall portion, the package has a retention tab projecting into the open mouth of an article within the package to retain the article therein. A foldable wall portion contained in the blank collapses onto the back wall and side walls of the display package and is erectable to create a full flat wall on the protective rectangular box opposite and parallel to the back wall.