A collector's book, perhaps (5)

I believe the answer is:

album

I'm a little stuck... Click here to teach me more about this clue!

'a collector's book' is the definition.
(I've seen this in another clue)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for album that I've seen before include "Book for filling in" , "CD or photo book" , "Photograph/stamp book" , "Book of blank pages for collectables, memorabilia etc." , "Book of collections" .)

I've seen this clue in the Evening Standard.

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