Smallest petrol tank on any bike you've had?

[Beemer-5]

What did it hold?
Litres or gallons, whichever.

Only, i just bought another small motorbike as a restoration project and i cannot believe how little this thing takes, from bone dry empty, to overflowing.

[Beemer-5]

This little 1969 Velo Solex holds 3 pints, from empty to full.

[Beemer-5]

My tuned 1972 Kawasaki H1 would do circa 50 miles on a tankful at Brands Hatch.