This is a great piece of history. This little book panelled in oak salvaged from the Royal George is 'A Narrative of the Loss of H.M.S. Royal George (1840–1844)', by a contemporary publisher  S. Horsey in Portsmouth/Portsea.
This scarce book was  literally bound using wooden oak timbers salvaged from the wreck of the ship. The book details the August 1782 disaster and subsequent military salvage operations by figures like Colonel Pasley. 
On the inside cover there is a label "The purchaser is respectfully assured, that the wood with which this little volume is bound, once formed part of the ill-fated ship whose history records; having been purchased from the Dock-Yard at Portsmouth'.
The little book measures 11cm l x 7cm w.
This is definitely a real piece of history.