Delightful 1940s display card with two good strong clean aluminium WAVE CLIPS.
I have them in 2 sizes :
nearly 3"/ 7cm long (card a bit bent)
1.8"/ 4.5cm long
According to the packaging..
"The teeth meet...do not interlock therefore
WILL NOT CRUSH OR RIDGE THE WAVE"
Helpful instructions on the back.
MADE IN USA
Found in an old warehouse clearance - the last picture shows the box they came in.
Most of the cards have a little bend on the packaging from long years in storage.