We don't recall ever seeing this specific edition of Bunyan's Pilgrim before. The 1875 facsimile of the 1678 1st edition of this immortal classic we do handle on occasion. To our recollection though, we have never seen an another example of the present wide margin edition. Presumably printed in a very limited quantity, perhaps for a small number of scholars, constructed with the wide margins for academic marginalia, etc. 

Bunyan, John. The Pilgrim's Progress as Originally Published by John Bunyan Being a Fac-Simile Reproduction of the First Edition. London. 1875. 266pp. + 205pp.

[Inclusive of]

Bunyan, John. The Pilgrims Progress from this World, to That Which is to Come: Delivered Under the Similitude of a Dream Wherein is Discovered, the Manner of His Setting Out, His Dangerous Journey; and Safe Arrival at the Desired Countrey. London. 1678. Printed for Nath, Ponder at the Peacock. 266pp.

Bunyan, John. The Pilgrims Progress from this World, to That Which is to Come the Second Part. Delivered Under the Similitude of a Dream Wherein is Set Fourth the Manner of the Setting Out of Christian's Wife and Children, Their Dangerous Journey, and Safe Arrival at the Desired Country. London. 1684. Printed for Nath, Ponder at the Peacock. 205pp.

A very good copy, bound in quarter leather with some minor abrasions at hinges. Very slightly shaken at the front interior hinge, but generally solid. Pages have some toning, and minor bumps to the foredge of the text block.