The album was originally available for 50 and two bottle caps.
During the war years, material used to make bottle caps were in short supply.
Workers sometimes used their feet to help put the bottle caps on.
Obstacles on the ground include bottle caps and large ropes.
They also want Johnny to get rid of his bottle cap collection.
Making a hole through the bottle cap is a job for an adult.
Examine the join where the valve goes through the bottle cap.
This helped to drive acceptance of his bottle caps rather quickly around the world.
Later, walnut shells were used, and today the use of bottle caps is very common.
After 3 bottle caps the site has never updated again.