anna is 6 paisa
అణా అంటే 6 పైసలు. పదహారు అణలు దాదాపు ఒక రూపాయితో సమానం
16 * 6 = 96 paisa (equivalent to 1 Rupee)
it use to be a coin of size larger than current rupee; as much as current half dollar coin.
So, in olden days the woman who use to put big Bottu/bindi/ tikli .. they use to refer that woman with that phrase.
aame bottu aa coin anta pedda ga undedi annamata ..
Implying that means she is proud about her culture and prefer to put pedda bottu ..
16 anna la bottu unna aada-padachu
became 16 anna la aadapaduchu/ telugu ammayi