The specimen version was issued in a Royal Mint folder. It had a superior finish than the standard coin making it more presentable and therefore more highly favoured by collectors. The folders themselves were attractively crafted and informative. The silver proof version was silver in the centre and the outer band was gold plated. The Piedfort proof version was double the weight and thickness of the standard coin. It was made of pure silver and the outer part was made of plated gold.
The Piedfort proof version was part of a collection including another £2 coin from the same year, a £1 coin, a 50p coin and a Diamond Wedding Anniversary Piedfort Crown. Only 3000 of these collections were made. At the time you could buy the collection for £249.95. The £2 coin itself from this collection can be bought for as little as £85 on shopping sites on the internet.
However, as so few were made, the value is only likely to increase with time. The gold proof version, of which only 1000 were made, is highly rare. These sold for £395 at the time and so their value will have greatly increased and will fluctuate between different sellers. Reportedly the gold version could sell for as much as £550 at present, but would be likely to claim a higher price in the future.