The T3 Light Tank was an attempt to get a lighter vehicle in order to fit the new US classification for light tanks.
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Light Tank T3 - Tank Encyclopedia
AMX Leclerc MBT (1990)
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WW2 French Light Tanks Archives - Tank Encyclopedia
WW2 US Light Tank Prototypes Archives - Tank Encyclopedia
WW2 French Light Tanks Archives - Tank Encyclopedia
WW2 US Light Tanks Archives - Tank Encyclopedia
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WW2 US Light Tank Prototypes Archives - Tank Encyclopedia
WW2 Soviet Light Tank Prototypes Archives - Tank Encyclopedia
Cold War US Light Tank Prototypes Archives - Tank Encyclopedia
Soviet light tank T-38 (1937)