Like the CE and EG models the serial number is located on the neck plate on the back of the guitar. The year of manufacture is determined the same way for the Swamp Ash Special. The following number determines the model: 5 or EG for the EG models, then the sequential number for that particular model. Like the CE models the serial number is located on the neck plate on the back of the guitar. The year of manufacture is determined the same way for the EG models. The serial number of a set-neck model is located on the back of the guitar’s headstock.Īfter the year prefix, the remaining digits indicate the sequential order of set neck models built.