Here are some quarters and a Sahara Plaque,the Plaque is slightly warped,I guess some of these do that with age,like the Monte Carlo plaques are notorious for doing.I think the larger they are the more tendency to do so.Of course proper storage and heat and cold play in a factor as well.Also some matchbooks for sale or trade too.Please leave a comment,question,suggestion,pic,poke etc. Torrey