This is a commemorative coaster set from Samuel Adams Boston Lager, a beer brand once called America's #1 craft beer. Made of paper (cardboard). 100 coasters per set. Shrink-wrapped. Unopened. Believed to be from the 1990s. The front features the Samuel Adams logo, and the back has the year and an associated anecdote. It seems that each coaster has a different year and anecdote, but this cannot be confirmed as the set is unopened. Please be aware of this. Although unused/unopened, it is approximately 30 years old, so there are very minor scratches on the surface of the packaging and the edges of the coasters. The extent of fading on the exterior is unknown as the original condition is unclear. However, there are no noticeable stains or extreme discoloration.