weight.
for paper money the paper can disintegrate.
use the standard grading system.
look at the white lines on the out side.
look at the words and the objects on the coin and see if they pop out.
find it’s weight in silver, copper or gold.
check how many coins or paper bills were made.
raise the price according to the date created and grade. in one situation, someone wearing a ski mask approached the dog in a threatening manner. in another, the dog was asked by its owner to walk across an unstable wire mesh bridge. the most realistic situation involved separating the dog from its owner. 