As you can see, this is a quite characterful sanshin neck. Vintage yushi-wood. The lacquer finish has some damage. Brushed lacquer. It's remembered that it was purchased at Teruya Shamisen Shop and received in the 1970s, but it's unknown which Teruya Shamisen Shop it was. The neck has a twist. Those who don't mind the string distortion, etc., may find it acceptable, but to use it properly, some fine adjustments to the core may be necessary. Personally, I think it's best to use it as is. This is just my personal opinion. Thank you. https://ameblo.jp/34doumakiya/