Hello I just bought a banjo flom a frea market it has 4 strings and a very short string!! Is it rare it looks rare it has a name on it saying This Banjo Belongs to Pete written in thick marker pen who is Pete do you know?? Maybe he wants it back?? What is its CMV (current market value)? Is it worth the £80 I spent? It sounds awful and looks like hell can you tune these things if I bought them to your house?