Scotch whisky has proven to be a consistently sound investment as auction results regularly show. Complete sealed bottles in old style packaging is particularly sought after because the survival rate is tiny, as Scotch whisky is a highly consummable product and, unlike wine, it does not age once it has been bottled and so most of it is consumed within a short time of becoming the finished product. Accordingly, obsolete product lines are increasingly scarce and in demand from collectors.