Yes there are already some coins (below) and I plan to upload more.
Chandragupta Maurya: N# 428496.
Asoka: N#48621, N# 347090, N# 272033.
I'm noticing many miscatagorized karshapana suggesting the need for additional ruling authorities, Magadha Janapada (492-370 BCE) for one: N# 435571, N# 67306, which are misplaced in the much later Mauryan empire section.
Thank you.