Sectioned view of telephone with handset, c 1960.

"Pye 'Ranger' VHF radio telephone set, c 1960s."

Ericson telephone handset, c 1920s.

Ericson telephone handset, c 1920s.

Post Office 332 telephone, 1938.

'Princess' dial telephone, c 1950s.

Post Office 706 telephone, c 1959.

Bell candlestick telephone design, c 1878.

Siemens Neophone telephone, 1929.

Siemens Neophone telephone, 1929.

Siemens Neophone telephone, 1929.

Siemens Neophone telephone, 1929.