In 2000 to celebrate the Millennium, the Royal Mint on behalf of Gibraltar released a very Limited Issue Dual Dated £5 Five Pound Titanium Proof Coin struck in solid Titanium.
The reverse design depict the measurement of time through the ages, the sundial, the clock candle, mechanical clock with the obverse featuring the portrait of Her Majesty the Queen.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.