You are looking at an orginal 19th century book in the publisher's simple hardback binding - as described 

Gens Sylvestrina
Memorials of some of my good and religious ancestors or eleven generations of a Puritan Family
Joseph Hunter A fellow of the Society of antiquaries
1846 Printed for Private Circulation
ix [9] + 189 pages all page edges gilt
with a contemporary? book bag / cover with long cord tie.

Remarkably uncommon Copac shows only 3 copies in institutional holdings and few offered for sale online 

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