URL details: swatchprototypes.com/tissot-astrolon/
URL title:
Astrolon | swatch prototypes V2
URL description:
Tissot started to investigate the field of plastics in 1952 and in 1971 introduced 'Astrolon' a mechanical (handwinding) movement and case in which the wheels, pinions, escapement, case and plates were all cast from plastic. The number of parts had been reduced to 52 from 90 and by moulding the whole movement, Tissot eliminated 40…
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