Does anyone know when Primos first came out with the Jellyhead? Three years ago an 870 Super Mag I bought as a dedicated turkey gun came with a choke that only had " Primos, Rem, .660 " on it. No model name. That particular variant of the 870 was manufactured from 2005 through 2007. Fine choke as far as performance is concerned. Just wondering if it`s a very early Jellyhead.