This is a variant 5-string C-G-D-A-E using the VDG model in the Stradivari Museum. I also used the 1684 5-string peg-box, which likely went onto a larger instrument like the ‘General Kyd’ cello of the same year. I think the date in mine is about 1984.   There is no bend point in the upper bouts of the back. I simply curve the ribs to fit the bending back. Because the arching in the upper bout is almost flat due to the counter curve extension at the neck block; it bent very easily. I