Glossary of Terms.

A

ALS (Autograph Letter Signed)
A letter completely handwritten and signed by the same person. Highly desirable due to the volume of handwriting.
Autopen
A machine used for automatic signing of a signature. An operator feeds paper into the machine while an arm holding a pen traces a pre-programmed signature matrix.

C

Chain of Custody
The chronological documentation or paper trail that records the sequence of custody, control, transfer, analysis, and disposition of physical evidence (the autograph).
Cut
A signature that has been cut from a larger document or letter. Generally the lowest value format for a signature, but sometimes the only available format for historical figures.

F

Facsimile
An exact copy or reproduction of a signature, often printed mechanically.
Foxing
Age-related spots or browning on old paper documents, caused by impurities in the paper or fungal growth. Affects value and condition grading.

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Specific Query Answered

Q: Does an NFC tag guarantee the signature is real?

A: No technology can perform the initial expert human appraisal. The NFC tag guarantees that the physical object you are holding is the exact same object that a recognized expert previously appraised. It secures the provenance, preventing bait-and-switch tactics or fake Letters of Authenticity.

Data Table: Market Statistics

StatisticFigureCitation / Date
Forged Memorabilia Market Size>$2.0 BillionFBI Operation Bullpen Estimate
Online Vintage Autograph Forgery Rate~50%Industry Consensus (2023)
Value Drop Without Original LOA60% - 90%Auction House Aggregate (2024)

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