“I haven't used the coils yet as I still have a few from my last purchase. The last time I bought them from Mist I did the authenticity scratch test and they were not recognised, I informed the Mist who just said that was strange...
I have been using them and they're fine, whether fakes or not (and I'm not saying they are!)
Anyway, I have been using these coils for years with my CE5 clearomisers and each one always lasts for months. I am happy to recommend them.”