The invention relates to a document of value system, a method for identifying a document of value of a document of value system and a luminescent substance set. The value document system comprises at least a first and a second value document. The first value document has a security feature from a combination of at least a first and a second luminescent substance of a first and a second substance class. The second value document has a security feature with at least one first luminescent substance of the first or second substance class. The security feature of the first value document has at least one different intensity ratio of the emission, one different decay time ratio and / or one different decay time sum in two adjacent spectral ranges compared to the security feature of the second value document.
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