The “Britannia” coach, currently being made in Australia, features wood from several UK cathedrals and timber from HMS Victory, Nelson’s flagship.
The coach, which will cost more than £600,000, will be transported to Britain as a gift to the Queen.
A carved and gilded imperial crown on the roof is made from wood from the Victory, acknowledging the Royal Navy. The army is represented by metal from a musket ball from the Battle of Waterloo, while material from a Lancaster bomber that flew in the Dambusters 617 squadron will acknowledge the RAF.
Timber from cathedrals including St Paul’s, Canterbury, Wells and York have also been used in sections.
The 2.75-tonne, 20ft-long coach also features oak gear teeth made by John Harrison, a carpenter who made the world’s first marine chronometer in 1726.
Jim Frecklington, who formerly worked in the Royal Mews, is co-ordinating the project with the backing of Buckingham Palace.
The Australian federal government is helping fund the construction with A$250,000.
