In transactions of old wine with the potential of improving with age, the issue of provenance has a large bearing on the assessment of the contents of a bottle, both in terms of quality and the risk of wine fraud. A documented history of wine cellar conditions is valuable in estimating the quality of an older vintage due to the fragile nature of wine.[24]
The copying of famous works of art dates to the origins of the history of art collecting and therefore to the beginning of the history of art. In the ancient world, replicas of famous works were made in order to satisfy demand by collectors for such works. The bronze Spear Bearer (c. 450–440 bce) by Greek sculptor Polyclitus, for example, achieved great renown for its perfect proportions and beauty. As a result, it was often copied in marble for Roman collectors in subsequent centuries. The copies, which are all that survived into the 21st century, made no pretense of being the original or having been made by Polyclitus.