I got this one from a local nursery and it just said, "Cayenne" on the tag. I know that there are many types and was looking on chileplants.com and saw that the "Goat Horn" Cayenne looked a lot like it, but not sure.
I just went to the flea market down here in Northern Mexico. Seen some peppers just like that, they were not labeled at all. Sorry I cannot help, but they are are good looking none the less.
I bought an unlabeled habanero, I will be doing the sam thing you are, picturing it here to try and get an ID.
I paid $2.00 for it cause it was kind of ignored and needed some love. It's doing better now, but I think it will get even better after I give her some liquid fish fert I just got. Charles (Datil) I'll send you some seeds.