This is the official
Porsche 356 B brochure that has the logo on the back cover as it was
embroided on the Liebe zu Ihm book The difference between the 2 logos
is that in the figure on the brochure there's the shape of a factory.
This shape is not shown on the embroided logo on the book. Another
difference is the fact that the logo on the book is coloured, on the
brochure it is black on a otherwise complete yellow background.The
brochure has a Porsche number W36 3M.7.60.GI which means it was printed
in july 1960. The 3M means it was printed on 3000 copies.