Mask of Shadows & Ruin of Stars by Linsey Miller.   

Trade paperbacks.  Sourcebooks.  2018.  Both First Printings with full number lines 1 to 10.

Condition:  Both lay flat , no crease on spine.  May have been read . no writing.  darkened end pages but this is due to the paper used.  Overall  to be safe.  Very Good to Near Fine. Not a library book.  Actual photos of book.

Our Book rating is as follows:
As New: Without faults or defects, unread, in the same condition in which it was published
Fine: Approaches the above, but not crisp. May show signs of having been read, but no defects.
Near Fine: Approaching FINE but with very minor defects or faults, which are noted.
Very good: A used book showing signs of wear on either binding or dustjacket. Defects noted.
Good: The average used and worn book that has all pages or leaves present. Defects noted.
Fair: A worn book that has complete text pages, defects noted
Poor: A book that is sufficiently worn that its only merit is the complete text, defects noted

Condition of Dust Jacket also rated as above.