Three rare 19th century bottles of whisky and cognac went on display yesterday ahead of an auction this week.

The two bottles of whisky and one of cognac are expected to fetch several thousand pounds each at the McTear’s sale tomorrow in Glasgow.

A bottle of 19th century Chivas Regal is expected to go for £3,000 to £3,600, while a “one pint eight fluid ounce” bottle of Haig & Haig Liqueur Scots Whisky Pure Barley Malt is valued at between £2,000 and £2,500.

The rare Janneau 1872 Cognac is expected to fetch up to £1,800.

Distilled in 1872 and bottled in 1977, it is the oldest reserve ever released by Janneau.

McTear’s whisky and wine specialist Andy Bell is confident all of the bottles are still drinkable despite their age.

He said: “With very old bottles there is always the danger that over the years the spirit has been spoiled in some way, however these are very good examples and we are confident that the contents are in good condition and drinkable.

“The big question though is having spent several thousand pounds on a bottle. Would you actually want to drink your investment?”

The bottles will go under the hammer at the Rare and Collectable Whisky Auction tomorrow.

That sale and the Wine and Port auction on the previous day are expected to fetch more than £220,000 between them.

Other bottles in the 700-lot whisky sale include a Bowmore Bi-Centenary blend which is more than 12 years old and valued at between £2,500 and £3,000, while a 35-year-old Highland Park is expected to fetch between £2,000 and £2,400.