Unlocking History number (UH#)

UH0017



Original

Yo El Rey, two-piece lock: paper band and shaped-covered seal (1732)    



Model and research notes

MIT Libraries, Unlocking History Research Group archive, MC0760, Box 26.



Letterlocking Unique Video number(s) (LUV #s) & Instructional video(s) URL

LUV017 https://www.youtube.com/watch?v=_KAt7Y0KJNo 



Instructional video info transcription

Forthcoming



Letterlocking Category number (LC #)

LC15L or LC16L



Letterlocking Format number (LF #)

4RW



Security score

Low



Assessment of Confidence in assigning LC#

Inferred



Substrate

Paper



Dimensions 

Letterpacket (in mm): 75mm x 98mm



Manifestation

Opened



Distinctive letterlocking style(s)

Two piece lock-O



Locking mechanism

Lock



Security enhancements

Authentication



Letterlocking category formula (shorthand)

LC15 

Fold + Slit/Hole + Adhere + Lock-O 

(F + S/H + A + LO)



Or 



LC16 

Fold + Tuck + Slit/Hole + Adhere + Lock-O 

(F + T + S/H + A + LO)



Letterlocking manipulation sequence (shorthand)

Forthcoming



Locking instructions

Forthcoming



Images 

Forthcoming



Foldable(s)

Forthcoming



Step-by-steps 

Forthcoming



Substrate map

Forthcoming



Virtual unfolding results

NA



Manipulations

Writing: NA, Margin folds

Postal: NA

Opening: Tears

Filing (Storage, Display): Sewing holes

Repair: NA



Damage

Forthcoming

Tears

Ink Corrosion

Wormholes



Features

Dirt on panels/ in crease

Radiating wrinkles

Seal impression adjacency

Wrinkles



Article(s)

NA



Book 

Jana Dambrogio and Daniel Starza Smith with the Unlocking History Research Group. Letterlocking: The Hidden History of the Letter. Cambridge and London: MIT Press, 2025.



Citation for the letter(s)

Original

King of Spain to the Duke of Sora (June 18, 1732). Boncompagni Ludovisi Archive (Villa Aurora), Rome.



Model

MIT Libraries, Unlocking History Research Group archive, MC0760, Box 26

Video

LUV017

Jana Dambrogio and the Unlocking History Research Group, “Yo El Rey, two-piece lock: paper band and shaped-covered seal, Spain (1732),” Letterlocking Instructional Videos. Unlocking History number 0017/Letterlocking Unique Video number: 017. Filmed: June 2014. Duration: 4:22. Posted: June 2014. URL: https://www.youtube.com/watch?v=_KAt7Y0KJNo. Accessed: March 4, 2025.





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