I have a very old, cheap Hairfred which makes that buzzy sound that's on "Jealousy" and "White Queen". I've never seen another one like it. I made it sound like a sitar by taking off the original bridge and putting a hardwood bridge on. I chiseled away at it until it was flat and stuck little piece of fretwire material underneath. The strings just very gently lay on the fretwire, and it makes that sitar-like sound.