Mechanical Valentine with Kaleidoscope movement

  

Mechanical Valentine with Kaleidoscope Movement

This Valentine features a pull / push tab that makes the image change.
The center image changes from a circle of flowers and ribbons to
flying Cherubs among the clouds.

Below is a closer look at parts of this card

 

 

Source:
The Metropolitan Museum of Art
1000 Fifth Avenue
New York, NY 10028
Sited as Public Domain, with
Open Access under the Creative Commons Zero (CC0) license