It has a nail on the very top. Please give this a thrust with some pierce damage!
If you started hitting a random person with the mentioned spike, he or she would rather die of an old age than because of the wounds...
Also be careful. Stab becomes useful when a weapon has enough damage on the stab. For example long maul used to have 10 blunt stab damage which was a reason of glances and was only disturbing.
Anyway, this weapon could have the thrust attack, I see no obstacles tbh.