This is a Mosrite Ventures model. The tremolo unit has been replaced with an Excellent unit. The stud bolts have been replaced with fixed ones. This reduces tuning instability when using the arming system. The 22nd fret marking is 3131. There are scratches in various places, but the condition is relatively good, and the frets have about 70-80% life remaining. There are no dead spots. Comes with a dedicated case. I don't have specialized knowledge of Mosrite guitars, so I'm not sure about the details, but thank you. #mosrite