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The series was scrapped after strike action by BBC production crew.
The unique directors scripts from the 'lost' Doctor Who series that never aired almost 40 years ago is expected to get fans of the Time Lord excited when they go under the hammer.
The unique papers are from the 1979 Shada story - written by Hitchhiker's Guide to the Galaxy author Douglas Adams and starring Tom Baker as the Doctor - which was left unfinished because of BBC strikes.
The scripts, which have pencil-scribbled notes by the director Pennant Roberts, are being sold for charity by his widow, Betsan Roberts, in aid of Shelter Cymru.
They will be sold by Rogers Jones Co auctioneers in Cardiff, Glamorgan, on March 2 and are expected to fetch at least £400.