This detail page shows several photos of the book to show what a first edition looks like.  The images are original photos taken of my personal copy of the first edition book. 

The Black Mountain - Collins (1955):

• This is the Collins Crime Club UK first edition
• The front flap has the price at the bottom (9s 6d net)
• The cover is red cloth with black lettering and a logo on the spine.
• The copyright page has no further printings noted and the year is printed on the bottom line on the page