You are looking at an original 18th century book in a contemporary full leather binding - as described 

A Tale of a Tub. 
Written for the universal improvement of Mankind.
to which is added, an account of a Battle between the Ancient and the Modern books in St James's Library
also
a discourse concerning the mechanical operation of the spirit, in a letter to a friend. A fragment.
[Jonathan Swift]
Dublin Printed by A Rhames for W Smith 1726 
The Seventh Edition with the Authors Apology and explanatory notes by W.W---tt---n, B.D. and others
xlix [49] + 226 pages, measures 88mm x 148mm

Apparently uncommon thus in current commerce

Thank you for looking - 
sold with flaws described / shown
any questions please ask before bidding