Well, By your post, I'm not entirely sure what you want to know. Maybe next time be a little more specific on what your question is. If you are curious of the value of these coins: Your 50 cent is .925 silver and weighs in at 11.6 grams and has a mintage of 1,113,429 and is worth about 7$ and your 25 cent is also .925 silver but weighs in at 5.83 grams and has a mintage of 5,852,262 and is worth ABOUT 2.40$.
I just wanted to know how much they were, i thought since they were in the how much sub forum that that was sufficient but next time i'll ask how much