The '39 and '42 are worth 5 cents each. The '43 P is worth 92 cents at the current spot price of silver. http://www.coinflation.com/coins/silver_coin_calculator.html
If your looking to get rich, this is not the way to do it. @rickmp is correct, your coins aren't worth very much. However, If you're looking to build a date and mintmark set, then this is a nice start. Keep looking for diff dates that you don't have and replace the worn examples (like these) with any better ones you find. That's the classic way to get started in coin collecting. Best of luck if you decide to take the collecting route. I would bet that the vast majority of the experienced collectors on CT started by saving diff dates from circulation and most would be happy to help answer legitimate questions
Thanks. All you guys. Yes I'm going to keep them. I do have also 39 40 41 42 43 44. 46 47 48 49 51 52 nickels.