Buffet Clarinet #49676.  
Buffet released the R-13 in 1955. This clarinet was made in 1954. It's widely believed that Buffet was experimenting with the
R-13 in the years leading up to its release. This clarinet has a poly-cylindrical bore which is characteristic of the R-13. We
think it's an R-13... It's scheduled for an overhaul.