What do you think? UPDATE.....it's toning or haze.
AUandAG
Posts: 24,802 ✭✭✭✭✭
my pic:
Bought this on a whim....just liked the looks. 1968 proof set, $25.
Strike through what?
bob 
Registry: CC lowballs (boblindstrom), bobinvegas1989@yahoo.com
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Looks like a patch of bad haze to me. Jmo
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Is it still in the gov plastic?
My Collection of Old Holders
Never a slave to one plastic brand will I ever be.
Environmental damage
Yes it is.
bob
OUTSTANDING!! Love mint errors in sealed proof and mint sets!! 👍🏻
P.S. Unless that proof set was cracked open and resealed with a tampered coin!
Disclaimer: I'm not a dealer, trader, grader, investor or professional numismatist. I'm just a hobbyist. (To protect me but mostly you! 🤣 )
I'm pretty certain that is just schmutz from degradation of the plastic in the holder. I used to find these from time-to-time in the 1968-1971 proof sets from the US Mint. They looked exactly like that and the haze would sometimes etch the coin surface underneath.
In honor of the memory of Cpl. Michael E. Thompson
Not a struck thru error.
Bad haze or stain.
I think it looks like haze also. Hope I'm wrong
So would haze have horizontal striation lines all going in the same direction and end suddenly along the right vertical line?
Disclaimer: I'm not a dealer, trader, grader, investor or professional numismatist. I'm just a hobbyist. (To protect me but mostly you! 🤣 )
Absolutely for the haze I have seen on this era proof sets. This coin looks exactly like what I have seen before.
In honor of the memory of Cpl. Michael E. Thompson
@TomB- Roger that, thanks!!
Disclaimer: I'm not a dealer, trader, grader, investor or professional numismatist. I'm just a hobbyist. (To protect me but mostly you! 🤣 )
Could it be a lamination? Can we get an angle pic close up of that area?
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It will be delivered late tomorrow afternoon. Pics probably on Tuesday. Unless it's a stain then it's going back as seller said it's not and was a strike through of sorts..... stay tuned we'll see. Was listed as an error.
bob
Interesting piece.
Interesting, hard to say as I'm not a big proof guy, but I think something etched the surface as it does not look like an error to me. Looking forward to your photos and assessment once received.
My Collection of Old Holders
Never a slave to one plastic brand will I ever be.
MY photos? LOL, that's a stretch. Pics are not my cup of tea for sure!
bob
Looks like haze.... When checking proof sets at gun shows here, I have seen that a couple of times... Cheers, RickO