Product details:

Calling all collectors! Don't miss out on this amazing coin proof set from the 1970s and 1980s. You'll get 20 individual United States Mint proof sets: one from each year 1970 through 1989. Created especially for collectors and never released into circulation, these coins are struck twice using specially prepared dies and planchets to give them a mirror-like finish and exquisite detail. From UPM Global, LLC.