Hi Y'all, I'm back with another couple questions. I'm sorting through 1971 and 1973 uncirculated penny bags (not the large bags, just a handful of the 15-20 cent bags). I looked in my blue book (I didn't know I was supposed to buy the red book ) to see if I should be looking for something 'special" and there are no 'special" listings for errors for these two years. However, while researching I found 1971 and 1973 coins listed on the internet with double die and/or mint mark errors. Now that I am thoroughly confused, please tell me what I should be looking for in these two years, if anything. Also, since I have these uncirculated coins should I leave them in their original bags or put them in tubes, or something else? By the way, I think I'm addicted to the coins and my son thinks I'm crazy :goofer: for all the time I spend researching them. He's even given me his $2 bills (great, now I have to start collecting paper money too!) Thanks!