This listing is for a Buffet Crampon & Cie. barrel for Bb soprano clarinet. It is stamped "R13 B 660" on the back. It is for a key of Bb R13 model. It is 66mm in length, which is the standard length for an R13.
This barrel is in excellent used condition. There are no cracks, chips, or other damage. There are no scratches or scuffs to the wood. The logo is clear. The rings aren't loose, and the silver finish is shiny.