Circular permanent magnet with annular gap 1 3/8" to 1", part of Oliver Lodge’s microphone amplifier or relay, 1898 (British patent 9712 of 1898), a precursor of the moving-coil loudspeaker Circular permanent magnet with annular gap 1 3/8" to 1"
Magnet, inscribed 'Yes we can', used to distinguish tin from steel cans, 1980s, made for ALCOA by Magnetic Novelties Co, Ellisville, Missouri, USA. Magnet for distinguishing tin from steel cans 1980-1989
Promotional magnet, Union Railways / Joint Ventures, two blocks with ‘unii’ and ‘ion’ marked on either piece, boxed. Promotional magnet Union Railways
Magnetic balance, Hibbert's patent 15821 of 1903, by W.G. Pye, Cambridge Hibbert's Magnetic Balance by W.G Pye & Co 1903-1970
fridge magnet, milk bottle shape, made by George Wilkinson (Burnley) Milk bottle shaped fridge magnet circa 1997