Serial Numbers Used To Date Martin Guitars are found on the neck block. Looking inside the soundhole and toward the neck you will find the serial number and model stamped on the neck block. The model number is above, the serial number is below it.Click to see full answer. Furthermore, how do I identify my Martin guitar?A Martin Guitar will have the model designation and the serial number etched on the neck block. Look in the soundhole toward the neck to see where this is etched.Secondly, what do Martin guitar model numbers mean? Deciphering the Martin guitar code is simple. The model designations can be broken down into two parts. Take D-28, or 5-18 for example. The letter prefix “D” or number prefix “5” represents the guitar’s size. A guitar with a 14-fret neck has a body less than an inch shorter than a guitar with a 12-fret neck. Subsequently, question is, how do I look up a serial number? Android tablet Settings feature Option one: Open Settings > About Tablet > Status > Serial Number. Option two: For most products, the serial number can be viewed at the bottom of the device back cover. How can you tell a fake Martin d28?There are plenty of fakes out there but they are usually rather easy to spot. The bridge, the way the SN is stamped, the headstock, the “volute” on the back of the headstock, the purfling and binding, and plenty other things can tell whether it’s a real D28 or not.