Early Covert Pen Recorder, circa, 1980's
This is a very early pen recorder likely used by British Intelligence that would record for about an hour. Back in those days, any type of recording devise this small was really something and very expensive. We would guess this sold of over $1,500. You can purchase pen recorders these days for a small fraction of that cost with ten to one hundred times the recording time.

From The Ralph D. Thomas PI Vintage Collection
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