sentences:  Because of their inherent fragility and location, many of these marvellous works either deteriorated beyond repair or were destroyed by accident or vandalism.Over the years, as advertising materials (and the pubs themselves) were progressively modernised during the late 20th century, almost all the hand-painted beer ads were removed, but their distinctive style has become well-recognised and much-loved, and they are still a reference point in modern Australian commercial art.The best surviving examples are now museum pieces and expensive collectors' items.