
I remember. I'm in Pennsylvania.
I’m another who has never seen 3x4 egg cartons. A dozen has always been 2x6, and they also sell 18-count cartons here, which are 3x6. Your Polish eggs are beautiful Angie, are they real egg shells?
The eggs are very carefully pierced top and bottom, the contents blown out and the shell rinsed and left to dry completely....Yes, real egg shells. But my mother bought them at craft fairs. She tried once or twice but it was a dismal failure.
You poke a tiny hole in the bottom of the eggshell and drain it somehow. Then there are various other steps.
There might be youtube videos about the process.
