25K views · 625 reactions | Sending coins to be graded involves...

For paper currency, special paper made of cotton and linen is used. For coins, metal blanks are prepared, usually composed of alloys such as copper, nickel, and zinc. Paper Currency: The Bureau of Engraving and Printing prints the designs onto large sheets of the ade special paper using offset printing presses. Security features are also incorporated during this process. Cutting and Inspection (for paper currency): After printing, the large sheets of paper are cut into individual bills. Each bil