Unlocking History number (UH#)

UH0072


Original

Intelligencer Simeon Foxe’s Dagger-Trap Pleated Letter 


Model and research notes

MIT Libraries, Unlocking History Research Group archive, MC0760, Box 27.


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

LUV072 http://youtu.be/16GAIaYN_Gk 


Instructional video info transcription

Forthcoming


Letterlocking Category number (LC #)

LC47H        


Letterlocking Format number (LF #)

4RXW


Security score

High


Assessment of Confidence in assigning LC#

Attested


Substrate

Paper


Dimensions

Opened (in mm):        H:262 mm x 360mm        

Letterpacket (in mm): H: 48 mm x W: 90mm


Manifestation

Opened


Distinctive letterlocking style(s)

Dagger-trap


Locking mechanism

Lock


Security enhancements

Authenticated exposed seal

Fake security

Hatching

Booby trap Lock-SA       


Letterlocking category formula (shorthand)

LC47 

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

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


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: Margin folds

Postal: NA

Opening: Tears

Filing (Storage, Display): NA

Repair: NA


Damage

Tears


Features

Dirt on panels/ in crease

Radiating wrinkles

Seal impression adjacency

Wrinkles


Article(s)

2023. Daniel Starza Smith & Jana Dambrogio. Letterlocking: securing correspondence before envelopes in Routledge Encyclopedia of the Renaissance World. Lauren Shohet, subject editor. 


2021. Unlocking history through automated virtual unfolding of sealed documents imaged by X-ray microtomography 


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)

UH0072

Original 

Simeon Foxe to Sir Robert Cecil, addressed to Thomas Wilson (August 29, 1601). National Archives (TNA), SP 101/81 fols. 344/345.


Model

MIT Libraries, Unlocking History Research Group archive, MC0760, Box 29.


Video

Jana Dambrogio and the Unlocking History Research Group, “Intelligencer Simeon Foxe’s dagger-trap pleated letter sent from Venice (1601).” Letterlocking Instructional Videos. Unlocking History number 0072/Letterlocking Unique Video number: 0072.  Filmed: September 2016. Duration: 12:11. Posted: October 2016. URL: https://youtu.be/16GAIaYN_Gk. Accessed March 4, 2025.




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