Wierd action parts

[Ron Nossaman]

>Has anyone encountered one of these actions?
>http://mmd.foxtail.com/Pictures/Staib-Abendschein.jpg
>
>
>Thankfully, I haven't,
>Jon Page,   piano technician

Wow! Me either, also thankfully. Where does the player engage the action,
or do you suppose it's a key pusher downer? 

Ron N