Colorless with faint suggestion of yellow glass; blown into mold with vertical ribs, retracted and twirled during further inflation to produce spiral ribs. Rounded rim; light spiral ribbing extends from immediately below the rim to the upper part of the body, where it becomes progressively more faint; neck tapers to narrow bulge, below which it descends almost vertically before splaying and merging with body; wall descends downward and outward in convex curve, before tapering sharply near bottom, blowing spirals and many elongated bubbles; rounded base molding; tall kick with faint pontil mark.