shutter hardware - what is this?

hello,
can anyone identify the name of this particular type of shutter hardware:
http://semi-suave.com:81/temp/IMG_1835_web.jpg
the piece serves the job of a shutter dog, but its not a shutter dog... its a tilting mechanism that penetrates the entire lower corner of a shutter; then on the exterior wall (for when opened) & the interior window sill (when closed) there are corresponding female locks that it clicks into place with. in this fashion, the one mechanism serves two functions: clicking the shutters into the open- position, and clicking the shutters into the closed-position.
i call it a "vulture head" because the interior side of the piece is round (for a finger when its time to open), but has a notch for clicking -- which looks like a beak. so from the profile it kinda looks like a vulture's head.
anybody know?
thanks! sm
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...ive been told its called a "cincinnati".
sm
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