I bought some in 1987 as a souvenir at the gift shop after I toured the Bureau of Printing and Engraving. I still have them in a folder and to me it is a prett

I bought some in 1987 as a souvenir at the gift shop after I toured the Bureau of Printing and Engraving. I still have them in a folder and to me it is a pretty cool souvenir to remember that trip as a 12 year old kid. I would never think of cutting them up and using them.