Do all disney exclusive toy story figures have serial numbers?

The provided sources discuss the Disney anthology television series but do not mention Toy Story figures or any serial numbering system for them. Without documentation or statements from Disney or the toy manufacturers, it cannot be confirmed that every Disney exclusive Toy Story figure carries a serial number. Some collectible lines may include serial numbers for authenticity or inventory purposes, but the evidence at hand does not support a blanket statement for all figures in this category.