Which Georgian script's oldest form is Asomtavruli?

The Georgian script, whose three historical forms - Asomtavruli, Nuskhuri and Mkhedruli - are all still in use and are jointly listed by UNESCO. Modern Georgian is written in Mkhedruli, a rounded script with no capital letters at all.

It is one of only a handful of alphabets in the world unrelated to any other. The oldest dated inscriptions are from the fifth century in Palestine and Georgia; tradition credits it to a king three centuries earlier, and the arrangement of letters follows Greek order closely enough that some influence is likely, but the letterforms are not derived from anything. Armenian, next door, is similarly independent.

Its survival is the political point. Georgia sat between Persian, Byzantine, Ottoman, Mongol and Russian power for fifteen hundred years and kept its own church, language and letters throughout; the Soviet attempt in 1978 to make Russian the state language brought so many people onto the streets of Tbilisi that Moscow backed down, which almost nothing else did that decade. The date, 14 April, is still marked.