https://en.numista.com/catalogue/pieces2815.html
it says:
Two wavy lines throughout the circumference, interrupted by a plain segment on one side, and a segment with a 5-ray star on the other.
My coin has two stars, one on each side. Is this a variant? Or is a missing star an error?
you could call the two ends the "left end" and the "right end", the left end being where both waves start upwards like a sin wave.
This page shows a star at the left end, they say there is "a star", but maybe they forgot to mention the other one:
http://www.romaniancoins.org/3lei1966.html