I had been waiting for this book for sometime, so when it arrived at my door I couldn't wait to tear off the packaging and take in it's content.
The layout is so simple which makes each mark fly of the page when you look through them, all are in a solid black or greyscale depending on the complexity of colour in the originals, which really pushes you to inspect the detail in the shapes rather than be taken in by pretty colours.
With 400 marks featured in this book there is always something new to discover and for me it acts as a fantastic resource for design work (I work mostly with identity design) or even as a quick browse when you have a few spare moments.
Utterly beautiful, a must have for any lover of marks and forms, or even of Pentagram's work in general.