27 Vintage Pressure Plates for Stereo Camera -- Excellent Condition

Description

Up for sale is a lot of
27 Vintage Pressure Plates for Stereo Camera in UNUSED Condition.
I have no idea what kind of stereo cameras they are for, so I have taken pictures from different angles. If you have any questions or want to see more pictures, please let me know. If you happen to know what kind of cameras they are for, I would appreciate that you tell me. :-)
I am also selling other 3D lenticular pictures and novelty cameras
. Here is the link from which you will see them:
http://shop.ebay.com/water4lily/m.html?_trksid=p4340.l2562
.
If they are not listed yet, please feel free to ask. I do combine shipping if you find other things you are interested. I am a very serious and responsible seller on ebay since 2001, which can be proved by my 100% positive feedback over an uninterrupted period of a decade. Buy with confidence. Thanks for looking.