This Sinclair ZX Microdrive is believed to be either an internal prototype or promotional variant. It has a standard issue three Microdrive board inside but is encased in a transparent case allowing the workings to be observed.
From Rick Dickinson (10th October 2015) :
Date : 1983
"It appears to be from the production injection tools and likely to be an internal engineering request to see whats going on inside where the tape runs across the head to observe specific tape problems. Note the metal plate is missing suggesting it was deliberately not put on and therefore obscure what lies beneath that surface. Tool trials often used 'other' materials that happened to be running on the trial moulding machine so it could be that too, but unlikely due to missing plate. Nice that one has survived."
Manufacturer : Sinclair
This exhibit has a reference ID of CH39537. Please quote this reference ID in any communication with the Centre for Computing History.
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