This is a WENTWORTH WOODEN JIGSAW PUZZLE 100 Pieces entitled "Royal Wedding Commemorative Puzzle - The Duke and Duchess of Cambridge". 

It is complete with the unique Wentworth Whimsy Pieces, as can be seen in the Photos, and the Wentworth Brown Cloth Bag to hold the pieces. 

The Jigsaw and Box are in very good condition - as shown in  the photos it does have "Complete 7/2/20 written on the inside of the lid.  

Please see photo for detail.