Hi.  Today I purchased a barrel piano from eBay.  It functions
mechanically, but is horrifically out of tune.  There are notes
above the pins holding in the strings but I was hoping for some
additional guidance.

1. What octaves does it have?
2. What is the bottom C, C1, C2, C3 and so on?
3. What is a good type of tuning meter?
4. How do I know if the piano needs restringing?
5. Where would I get the right strings?

Thanks,
Why Stravinsky