Moving-Picture PostCard Swap

I'm editing this first paragraph, thanks to susieq11, who gave me the correct word for these post-cards.

" Lenticular " :

This swap is for one flicker lenticular post-card.

What I mean by that phrase is :

When you look at the postcard, it shows one picture,

and, when you move it - It shows another picture,

or, a different pose of the first picture,

and,

When you move the postcard again, it shows the original picture.

So - If you have one you'd like to swap, please join this swap.

One lenticular post card sent to one partner.

This postcard will be un-written on, and, sent in an envelope.

PS: Please don't confuse these with the 3-D postcards - I think 3-D's are just that - Three dimensional..

For instance, a tree in the foreground will look closer than the boat in the background...

The cards I am speaking about must show a differerent, or, another angle of the originial , type of picture, when you move it .