
What about Yamaha Ive never looked for anything in the Yamaha line myself.

Ive had luck with Selmer USA in the past, but getting definitive answers on Selmer Paris stuff was limited to the stuff in the lists. More recently, the lack of response from Leblanc has puzzled folks for many more years. The great Conn fire was accidental (apparently), but it has caused no end of problems over the years. Hes done a lot of work, and it looks he has enough data to be statistically significant. Recently a guy on Sax on the Web named Kurt has been collecting information to compile a Pan American saxophone list.
