Probably the best way to tell is to find 10 examples on ebay and get the average for how much they sold for. But coin condition would have a lot to do with pricing. You might get a Red Book to get an idea. (but we are going off the theme of the thread) You might ask your question on a new thread with images of one coin at a time. You will get better answers that way.
The light is too strong. You might try diffusing it with bond paper: That may cut the glare and reduce the light a bit. But magnification seems to be another issue. We just can see what you are seeing yet. Keep trying.
When I look at you new photos it looks to me like your half dollar is either a CONECA listed 64D DDO-008 or the 64D DDO-009. I can’t see any die scratches in your photos to tell which it is. A marker for the 64D DDO-008 is a light die scratch south from just east of tip of nose, and a marker for the 64D DDO-009 is a die scratch from nostril to lips. The attached photos are first the DDO-008 and marker, then the DDO-009 and then marker. Which one do you have? Larry Nienaber
I wish that I would have gotten back to you sooner.When I look at my coin I cant find Any thing that looks like a die marker. The field is very clear There is a nic between the lips but, it looks like a slight bag mark at the worst. The Hair is split at the R in three places Most lettering shows doubling in one place or another.