I believe the model number of this Schaller tuner is M4. I bought this some years ago from a seller that had a bunch of NOS parts from the bankrupt Kramer company. It is an exact match to the tuners used on aluminum neck DMZ 4000 and DMZ 6000B basses I used to own. I bought it to have a spare, but never needed it. I sold those basses a few years ago, so thought someone might be able to use this. $30 includes shipping to lower 48 US.
