The logo on the headstock can give you a good indication of when the guitar was made. Another way to date an Epiphone guitar is to look at the logo. The letter denotes the year the guitar was made, and the numbers correspond to the production number. The serial number can be found on the back of the headstock, and it will usually start with a letter followed by a series of numbers. There are a few different ways to date an Epiphone guitar. If you are thinking about purchasing an Epiphone guitar, or if you already have one, you may be wondering how to date it. They are known for their quality construction, great sound, and affordable prices. Epiphone guitars are some of the most popular guitars on the market today.