"Whisky scam broker found guilty" in Financial Times, 24 April, reports the conviction of Stephen Jupe on three counts of fraudulent trading and one of illegally using a company name.
Report states his business "took more than UK£4m from about 2,000 investors who believed they were buying quality malt whisky and prestigious champagne..." The business traded as Marshall Wineries and sold Grandtully sms. According to the FT, "a Grandtully hogshead bought for more than UK£900 in 1993 was actually worth half that."
Which surely is further evidence that the value of whisky as an "investment" can go down, as well as up
(whatever the marketing men might say )