Brian Gaff used to work at Telecom Tower in London (formerly the Post Office
Tower). I need to get a bit more info, but basically he found a load of these
in a storeroom; they'd obviously been there since the early 80s when the telco
operated their Prestel service....this modem sat under the Speccy and allowed
you to access both the Prestel and Micronet 800 dial-up services that were popular
at the time, as well as any other viewdata-type service that was around.