Jog Saw Puzzle

Well that was how I spelt the file name anyway.
 
Mrs W has finally started the jigsaw puzzle she bought for Christmas. 
 
Apparently she also asked (told) me to keep the box flat as she had all the pieces the right way up.
 
I thought it rattled a bit . . .
 
(I’m also tempted to count the contents of the box as ‘derelict’, but perhaps that’s stretching things a little too far.)