wsky1

Port Dundas 1991 25 Year Old Signatory

£120

latest hammer price

Rare at auction· 2 lots a year

Auction lots

20

Houses

1

Last sold

324 days ago

Port Dundas 1991 25 Year Old Signatory is a collectable Scotch whisky from Port Dundas aged 25 years. Based on 20 recorded auction lots across 10 months of trading data, the current median hammer price is £118, with the most recent sale at £120. Over the trading window, prices have ranged from £80 (low) to £160 (high). Accounting for lot-to-lot variation, a realistic valuation range for Port Dundas 1991 25 Year Old Signatory is £101–£139 (±15% around the latest sale).

All Port Dundas expressions →

About Port Dundas

Port Dundas is a whisky distillery. Port Dundas 1991 25 Year Old Signatory is an age-stated bottling at 25 years old, distilled in 1991.

What drives this bottle's value

  • Single vintage

    Distilled in a single year (1991), so the available batch is inherently finite.

  • Considerable age

    A 25-year age statement reflects long maturation and the small surviving volume that implies — older stock is scarcer.

  • Independent bottling

    An independent bottling by signatory, typically produced in far smaller numbers than an official distillery release.

These are scarcity and demand signals drawn from the bottle's own attributes — they describe the bottle, not a prediction of future price. Not investment advice.

Release & bottling facts

Distillery
Port Dundas
Age
25 years
Vintage
1991
Bottler
Signatory
Bottle size
700ml

Latest sale

£120

24-month median

£118

24-month high

£160

24-month low

£80

Estimated value · likely range

£101–£139 ±15%

Auction hammers swing lot to lot with condition, fill level and timing. Treat this band — not a single figure — as the bottle's value.

Market presence

last 12 months

Rare at auctiononly a handful of lots a year

Seen at auction

2 lots

Cadence

≈ every 183 days

Houses

1

Activity rank

top 36% of tracked bottles

Last seen

324 days ago

Across the auction houses wsky1 tracks.

▲ 9.1%vs 6 months ago

Price history (monthly median)

£78£121£165Nov 17Oct 18Apr 21Sept 22Mar 24Jul 25

Recent auction results

MonthMedianLots
December 2025£1202
July 2025£952
March 2024£1202
October 2022£1402
September 2022£1602
April 2021£1502
October 2018£1102
March 2018£802
February 2018£852
November 2017£1152

Comparable bottles

Frequently asked questions

How rare is Port Dundas 1991 25 Year Old Signatory at auction?

Port Dundas 1991 25 Year Old Signatory appeared in 2 auction lots over the last 12 months across the auction houses wsky1 tracks — rare at auction (only a handful of lots a year). That puts it in the top 36% by auction activity among the 35,289 bottles wsky1 tracks — most collectable bottles hammer only a handful of times a year.

What is the current auction price of Port Dundas 1991 25 Year Old Signatory?

The latest hammer price for Port Dundas 1991 25 Year Old Signatory at auction is £120. Across the most recent 24 months of auction data, the median hammer price is £118, with a high of £160 and a low of £80. All prices are in GBP and exclude buyer's premium. Data is aggregated from major auction houses including Scotch Whisky Auctions, Whisky Auctioneer, and Bonhams.

How much has Port Dundas 1991 25 Year Old Signatory changed in value over the past year?

wsky1 currently has fewer than 12 months of auction data for Port Dundas 1991 25 Year Old Signatory, so a year-on-year trend is not yet computed. Recent hammer prices range from £80 to £160 (median £118).

Where can I sell Port Dundas 1991 25 Year Old Signatory?

Port Dundas 1991 25 Year Old Signatory regularly appears at major Scotch whisky auction houses including Scotch Whisky Auctions (Scotland), Whisky Auctioneer (Scotland), Just Whisky, Whisky Hammer, and Bonhams. The current median hammer price is £118 (excluding buyer's premium). At most major houses, buyer's premium adds 24–28% on top of hammer for the buyer; sellers typically receive the hammer price minus a sales commission of 5–15%.

Is Port Dundas 1991 25 Year Old Signatory a good investment?

Port Dundas 1991 25 Year Old Signatory has appeared in 20 recorded auction lots in our database, with a current median hammer price of £118. wsky1 provides hammer-price data for informational purposes only — not investment advice.

How does wsky1 calculate the price of Port Dundas 1991 25 Year Old Signatory?

wsky1 ingests public auction results from major auction houses (via direct scraping of Scotch Whisky Auctions, Whisky Auctioneer, Bonhams, and Whisky Hammer, plus aggregated data from WhiskyHunter). For each bottle, we group hammer prices by year-month and compute the median price per month. The figures shown — latest £120, 24-month median £118 — are derived from this monthly-median methodology. All prices are hammer prices in GBP, excluding buyer's premium.

Does the price include buyer's premium?

No. All prices on wsky1 are hammer prices only. Buyer's premium at major Scotch whisky auction houses currently runs at 24–28% on top of the hammer price. A bottle of Port Dundas 1991 25 Year Old Signatory that hammers at £120 would cost the buyer approximately £151 all-in including buyer's premium.

Own a bottle of Port Dundas 1991 25 Year Old Signatory?

Track it against live auction data and see your portfolio's real market value — free for up to 3 bottles.

Start tracking free →

Own a different bottle? Get a free whisky valuation for any bottle — no signup, no card.