Do toy story collectors use registration numbers to identify exclusives?

None of the verified sources mention a system of registration numbers or serial numbers used by Toy Story collectors to distinguish exclusive items. The knowledge graph confirms the existence of the Toy Story franchise but provides no details about collecting practices or identification methods. The Wikipedia entry cited concerns the Need for Speed video game series and is unrelated to toy collecting. Without additional evidence, we cannot confirm or deny that registration numbers are employed by collectors for Toy Story exclusives.