Coil spring spectacles (no lenses), with round tortoiseshell frames, National Health Service issue, English, 1948-1965 Coil spring spectacles (no lenses) 1948-1965
Coil spring spectacles (no lenses), with round pink plastic frames, National Health Service issue, English, 1955-1969 Coil spring spectacles (no lenses) 1955-1969
Induction coil, wood base and coil with metal wire, by Radiguet of Paris, second half 19th century Induction coil 1851-1900