Back in August my family moved into an old farm house that has sat vaccant for 3 years. As one could imagine there was quite a bit of work to be done to make it live-able and I will spare the details as I do not want to re-live the nightmare.



Anyways, I broke down an old (1913-1915), moldy, player piano. Wished I could have kept the wood but it was in rough shape. I added what I could to my pile but kept the strings seperate as I had a hunch they were wound with copper. I have pushed them up against my grinder but they are so old that they break on contact. My question is: how can I detirmine if they are copper wound or phosphorus/bronze?