STC TRIMPHONE PROTOTYPES | ||||||||
These pictures are of an STC Trimphone, which looks like it
is dated 1966. This is possibly a prototype of the
GPO Telephone No. 712 but is the number 66 the date, as the three hole
casing was superseded by a single case fixing in 1966. No other information is available. Click here for GPO Trimphone history
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Last revised: October 30, 2020FM |