Marvin - Yup. All songs in open C. However, the banjo might've actually been at Cb or C# or worse. I just tuned it to itself on any given day! "Evensong" is also open C tuning; just starts on a different chord. Say -- I think you overpaid me, BTW...
Marvin -- So, you're now in Ft. Collins, huh? If you get out to blues jams (I think Nathan King does that a bit), there's a bunch of 'em up & down the front range. Maybe I'll see you at one sometime, though I don't get out quite as often as I used to. As for the Ruskin banjo, it's long gone, but I do have a number of other CBBs at home that are for sale ($150). Or were you talking about the Ruskin cigar box itself, wondering if I had more? If so, nope! That was an eBay purchase.
Welcome aboard, MArvin! You will find lots of helpful folks and information here on all things CBG (CBU, CBB, etc.) Feel free to poke around, ask questions, and post your stuff (photos, recordings, videos, etc.).
Up in the Free Resources menu at the top, you will see a number of plans for building and playing cigar box guitars/ukuleles/banjos/dulcimers/violins. I encourage you to download any of the plans, take a look at them, and ask questions from there. Also our site is VERY searchable. I bet you your questions have already been asked, so take a few moments and look around.
Join our Chat sometime (see the bar at the bottom of your browser page). Keep in mind that tho the chat window says there are X number of people online, not all may have the chat window up.