6 String Tenor - You are what you ain't
Early on, I had ambitions of exploring the idea of doubled strings on the high E and B of my instruments, as I found it added that added subtle chime, without the issues of having a 12 string or fully double coursed instrument. This was my first (and only to date) example of such a combination, and remains a personal favourite of mine. It has a serious carved back, and probably the best french polish I had pulled off at the time. A huge learning experience for me, and pushed me forward immensely.