This is an old hard rubber blank that may very well be from the Meyer factory... I cant confirm this, but the individual we got it from is a reliable...
We're not super well versed in Clarinets... that being said, it is in excellent condition, and doesnt need any major work.It does have a 62.7mm barrell
Sound description coming soon. That being said... this is the begining of the sweet spot for MK VI Altos... near Mint condition, matching serial on the neck, and the original...