I too will swear the Perry site, pre-modernization, listed the range as Crecy to Agincourt. Not being the most up on the period, I can't say if they are useable or not, but I would believe Invisible. That dude knows his stuff!
The plastics? Would they be useable?
Perry do make some of the best minis, period. Based on choice, I would move my gaming period to Agincourt to use their minis over others!

