Marshall Model #4104 JCM 800 Master Volume Year1983 Serial Number12749RModel4104Watts50Speakers2x12"CabinetComboFolders Amp Archives Marshall JCM 800 Models Model #4104 JCM 800 Master Volume ComboModel #4104 JCM 800 Master Volume 1983 SN 12749R 12Images Leave a Comment Cancel replyYou must be logged in to post a comment.