100-piece 2-in-1 jigsaw puzzles (Saint Philip's S1)

Two puzzles in one – 100 pieces total (one puzzle on each side).
Factivity Outer Space – 2-in-1 Jigsaw Pack.
Reasonable condition, but not new.
The box shows some wear, and the puzzle pieces have been used.

Please note that I haven’t finished the jigsaw yet, so I can’t confirm that all the pieces are there, but I counted them, and there are over 100.

See here for more details: https://www.waterstones.com/book/9781785710896