Fun Game - Count the Silver

Here's a fun game I came up with - count the silver. How many 90% and how many 40% are in this box? Should be able to zoom in pretty good.
It's in a local auction, just list as half dollars, 1960-1976. I think my count is correct, but was wondering if there were other guesses. If I win it, I will post the answer in this thread. Fun, eh?

 

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Thirty-two silver halves.

 

33. I win.

 

I don't believe you can tell 40% silver looking at the edge can you?

 

I’ll go 34.

 

I can. I have very special powers....

 

Yes, you can. This is 40%:

 

Sorry, meant to quote @Randy Abercrombie on that last one.

 

12

 

That was way fun for someone who doesn’t do halves

 

I see one S. I Only counted the 3rd side coins

 

I think Charlie can. You missed one

oh that destroyed my guess

 

Nah. You’re just different. No added powers

 

Not always.

 

126 40% and 40 90%.

 

My eyes got dizzy so I'm probably far off but is the total 168 correct?Also 123 40% not 126.Im assuming those 5 halves not in the stack are the only non silvers.

 

166 total is what the auction says. You were close.
But there's a lot of CuNi clad there.

 

True, sometimes they look like 90%, and sometimes they look CuNi. But for the most part you can see a dark grey core and silver clad and tell.
Here's an old photo from my roll searching days (was a good day that day...) - the middle 10 or so are 40%.

 

When I used to bid on lots pictured like that, counting edges, I always assumed that a silver-looking edge was 40% and a clad-looking edge was non-40% clad. I wasn't often the high bidder, but I never overpaid.

I've seen lots of clad coins with edges that looked like they might be 40%, and 40% coins with edges that looked like they might be pure silver. All the more so if they were photographed without a proper white balance.

 

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