This dagger is a rare one. Named because the distinctive shape of its pommel. Ear Daggers most often have a single sharpened edge that ends with an acute point. You can see many different versions on Google.
I was unable to find much information about the dagger but found it rather interesting, the name and what it looks like. However I did find THIS website and they do have a bit more info.
*Disclaimer: I have done extensive research on each of these weapons. I am aware that there are many different versions of each of these weapons. I am not trying to spread false information. If you know and can prove any information wrong, please let me know and I will fix my errors. I have at least three references for all research on the weapons I will discuss through the challenge.