These are source-era category statements. Do not map average or founding age to whiskey youngest-component age. Historic sea voyage and modern heated-cellar simulation are not equivalent; market quotes are secondary research leads.
Full-source review; concise synthesis of the specified sections, not a verbatim passage or independent factual certification.
Average-age VOS/VORS, vintage anada and a solera's foundation date refer to different things. Naturally sweet raisinated wines differ from dry wines sweetened by blending. Cream and East India examples can be deliberately composed; a preference for pure styles is not evidence that all blending is inferior.
83
76
Old/vintage wines76–79; PX/Moscatel79–81; blended styles81–83.
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Evidence
Average-age VOS/VORS, vintage anada and a solera's foundation date refer to different things. Naturally sweet raisinated wines differ from dry wines sweetened by blending. Cream and East India examples can be deliberately composed; a preference for pure styles is not evidence that all blending is inferior.
Location and context
Source No access. PDF 76–83; Old/vintage wines76–79; PX/Moscatel79–81; blended styles81–83.
Locators refer to this supplied PDF, not print pagination or ebook index anchors.
Annotation
These are source-era category statements. Do not map average or founding age to whiskey youngest-component age. Historic sea voyage and modern heated-cellar simulation are not equivalent; market quotes are secondary research leads.
Literature Note 
Verification checklist
Verified means source fidelity, not factual certification. Native presentation settings remain unverified.