Nun similar to a bet in ktav Rashi
There are kosher nunim from vatikin sofrim whose regel doesn't achieve the moshav straightly rightwards, whereas there are posul nunim with a broken regel.
This one could apply to the description of the kosher ones. But it doesn't seem to me a nun and "my" tinok said he doesn't know what it is.
Is it kosher?
Yossef Moshe, Rio - Brazil.