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Great Britain - England 50 Pounds, 2020, P-397s, Specimen, Polymer

Pick: 397s
Date: 2020
Purchase from:
Great Britain - England 50 Pounds, 2020, P-397s, Specimen, Polymer
Zoom image

Signature: Sarah John  

Front: Queen Elisabeth II 

Reverse: Alan Turing, mathematical table and formulae from Turing’s seminal paper “On Computable Numbers, with an application to the Entscheidungsproblem”, Automatic Computing Engine (ACE) Pilot Machine (one of the first electronic stored-program digital computers) 

 

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