This item is a collection of "junk" pieces. It includes items that may be discolored or aged. There is also a possibility that pieces may break when connected. Please understand and acknowledge this before purchasing. There are definitely over 500 pieces (with extra included). Colors and types of pieces are random. These items are secondhand, gifts, or purchased at various times, and the condition of the pieces varies. There may be differences in manufacturing batches, but all items are genuine. We inspect for dirt, cracks, and discoloration, but there may be some dirt that couldn't be removed, unnoticed scratches, or overlooked dust. Please be aware of this. We hope that you understand that these are used items that children have played with. We look forward to your purchase.