Hi , Just received this half dime. Toning looks natural to me, but the coin must have been in some kind of holder for a long time as the rev has no toning in the center, just a little around the edges. Appreciate comments. Jim
Jim, There are a few things about that coin that concern me. First, the rims are almost black which is not very attractive and can be an indicator that heat was applied to the coin. The colors and pattern are very unusual but attractive. I can't recall seeing mottled aquamarine on a mint state seated liberty coin of any denomination, but I will state that I don't typically look at seated liberty coins as it is my least favorite design. I can't say whether or not the toning is NT or AT and in that situation, I will always pass on a raw coin. I like the coin despite the fact that it is a seated liberty design. I would like it a lot more if it were in an NGC holder.
I think that in many older collections (pre plastic) Coins were laid in trays, obverse side up. Could that be the explanation for the obverse toning and no (or little) toning on the reverse? Just a thought.
Educate me. The reverse of that coin looks rough. Lots of bumps, especially from the "H" up towards the last "S" in STATES. Is this coin real? If so, what's the source of the bumps?
What ever this coin was laying on probably caused this toning. My wife's 64 mint set toned in an unusual manner due to foam in the plastic case it was in. The colors are really nice but the pattern of toning is odd.
I don't know enough about toning to say NT or AT...but I think it has very nice eye appeal either way. It is a very attractive coin.
This date had the largest mintage by far of the entire series. So finding examples struck with rusty worn out dies is not hard to do. I think the toning is 100% natural. But it has progressed to the point that it is very near the corrosion stage. Care needs to taken to prevent that.
You try to get rid of it before it eats at the coin, the way I do it with Lincolns is a toothpick, and am able to do it without leaving scratches, but I don't know how well it would work with silver. And, that's assuming the corrosion hasn't eaten away at the coin yet too. (all that's written is my opinion, and I could very well be wrong, lol. ) Phoenix
What you remove from copper with a toothpick is an entirely different animal Phoenix. The only way to remove this type of corrosion is by dipping the coin.
Some of the reverse bumpiness is due to clash marks. I don't care much for the reverse, but the obverse is very nice. I assume dipping the coin would remove the toning completely.
That had crossed my mind, but I didn't mention it because I didn't want to bias the thinking of others. And, yes, the die clash is quite obvious.
Thanks for all of the comments. Some of the toning is quite dark, but it is still very flat on the surface. The reverse does have the appearance of being from a rusty pitted die, the rough area has the luster one would expect. I plan to keep it, maybe send it off a little later. I appreciate your input a lot! Jim
Oh, I see. What you are saying makes sense, thanks GD. :thumb: Now for me to go and learn about different types of corrosion, lol. Phoenix