Instructions
Assess your Coke bottles from all angles. Check which bottle looks to be in the worst condition and which one appears to be in the best shape. If the bottle is broken or scratched beyond recognition, grade it at a 1. If the Coke bottle is full, has no damage, looks brand-new and is in its original packaging, grade it at a 10.
Place the grade 1 bottles on the left side of a table and the grade 10 bottles on the right side. Use these as guides to classify all the other Coke bottles. Place the remaining bottles anywhere in between the 1s and 10s, based on their condition.
Compare your grading with others. Find a local Coke bottle collector or dealer and show them your collection. Discuss the quality and grades of your Coke bottles and look at their collection. Adjust your grades accordingly.