The recent "The Edeophone" topic in the Discussion Forum for Concertina History turned to my appeal for Serial Numbers and accompanying Descriptions for all types of Lachenal concertinas, as input to a longstanding research project (Randy Merris, Chris Algar, and Wes Williams) on dating the manufacture/sale of individual Lachenal concertinas. As I noted in the other forum, our arbitrary benchmark is a database of 4,000 instruments, before starting on the drafting of the piece. As of today, we ha