fbi_formLegibility: medium
Part 106, page 112
DB Cooper-48380Serials MM 164-552-1A15
Open in FBI Vault (Part 106, page 112 of the PDF)
FBI 164-81, Vault Part 106 p. 112 (DB Cooper-48380), Handwritten note, serial MM 164-552-1A15 (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-106/pages/112
Transcript
The scan is the source; the transcript is machine-generated from it.
mm 164-552-1A15 [guess: ;] 2103
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DB COOPER-48380