If I remember correctly, I bought the 3 Berzerk jigs a long long time ago, from Merrick Tackle when they used to be on Merrick Road. Maybe 1990 or so? They were about $8.00 or so. They do work, and I wish I would have bought more of them.
I have never seen anyone else with them besides Pat on the Lady J who I worked for for a little while. He had quite a few, and said he saw them work good for Tuna at the Bacardi...
Other than that, I have no more info on those jigs, but yes they are an ARtie Frye special