Cipher database

[Koen G]

Probably because common 15th century cipher methods are unlikely candidates for the VM. At least, something like simple substitution alone would not help us much. Also, after work and family responsibilities, there are only that many hours left in the week to devote to VM research. It seems like cipher hunting is a hobby in and of its own. 

Did you encounter any cipher (method or glyph set) that sheds more light on known VM problems?