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If a coin is shiny, then I try to only touch the edge of the coin. If a coin is not shiny, then I may put the coin in the palm of my hand, but I usually only touch the edges of the coin. I make sure, that my hands are dry, and not too dirty, when I handle my coins. I don't put anything, on any of my coins, such as wax. I try to keep my coins in a place, where the temperature doesn't get too hot. I keep my coins away from PVC plastic. I keep all of my coins in Abafil velvet trays, inside of Abafil cases. Except for my Lincoln cent collection, and less important coins, which I keep in blue Whitman albums. And my least important coins, which I keep in a small wooden treasure chest, or in hard plastic coin tubes. I've been collecting ancient coins for 4 years, and I've never had any problems with bronze disease. I don't worry about toning of silver coins, because I like toning.

I agree. I don't know, if auction houses ever do such a thing, as cancelling a purchase, in such a situation. Perhaps, if the auction house could prove, that the app caused the error, then the auction house may decide to cancel the purchase, and still pay the highest bid to the consigner. Perhaps this situation is covered, in the fine print, of the agreement to which the bidder agrees, before the auction. I guess, it's a risk we all take, when we bid at electronic auctions. I sometimes wonder, if this sort of thing will happen to me, someday. Luckily for @seth77, at least, it wasn't a $10,000 coin (not likely in a Savoca Blue auction, I guess).

Theoretically, the auction house could cancel the purchase, and still make the consigner happy, by paying the full amount of the highest bid, to the consigner. Then, the auction house would own the coin. Then, the auction house could auction the coin at a future auction. Of course, this would be a risk, to the auction house. If the coin gets a lower hammer price at the future auction, then the auction house would lose money on that coin. However, whether the auction house should do that, or would want to do that, is something which, I won't try to figure out. I guess, it would depend on various factors, such as whether the coin is extremely expensive, and how often this sort of thing happens for that auction house, and whether the error was caused by the app, or caused by the bidder, or both. I have no idea, if auction houses ever do such a thing.

@seth77 Perhaps, they will allow you to return the coin, because you are a long time customer, and perhaps they will accept your word, about what happened. If not, then perhaps, they will allow you to immediately consign the coin to their next auction. Rather than shipping the coin to you, perhaps they would simply put the coin in their next auction, with you as the consigner. Perhaps, they would not charge you the usual consigner fee, because perhaps it's less work than a usual consignment.

It looks like you accidentally said "obverse". I think, that you meant to say "reverse".

Thanks @ambr0zie for providing another data point. I wonder, if a water pick, using distilled water, and using the narrowest fastest-jet attachment, would have any effect on loose dirt, or bronze disease, or deposits, etc.

Here's a previous thread, about ultrasonic cleaners, for removing bronze disease. In one of my posts in that thread, I posted 3 Youtube videos, in which people tried ultrasonic cleaners. The Youtube videos caused me to decide, not to try an ultrasonic cleaner, at least not a cheap one. And, I wouldn't want to buy an expensive one. If there was any effect, it may have been a result of the water, or the solvents in the water, rather than the ultrasonic cleaner. However, it was only 3 Youtube videos, which is too small a sample size, to draw any scientific conclusions. But, 3 Youtube videos, was all I had time to view. It would be interesting, to see your results, if you try it.

On Vcoins, whenever I've used the Vcoins message system, in which you click on a button on a Vcoins web page to send a message to a dealer, I've never received a reply, from any dealer. However, whenever I order a coin from Vcoins, I always get an initial email from the dealer, from an address of the form dealername@vcoins.com. Whenever I send an email to that dealer email address, I always get a response. In the past, someone mentioned, that there has always been a problem, with the Vcoins message system.

My favorites are coin 2 (quadrigatus), coin 7 (Augustus denarius), and coin 9 (Caligula dupondius).

I live in the US. I was too young to remember 1965. However, in the 1970s and 1980s, I remember occasionally finding a silver dime, silver quarter, or silver half dollar, among change. You could tell, because the edge of the coin was totally silver in color, and didn't have a band of copper. Whenever I found a silver coin in change, I kept it. I guess all coin collectors did so, and there were a lot of coin collectors back then. I imagine, that a lot of non-collectors also did the same. Perhaps that's what happened in the Roman Empire.

It worked. I was able to add coin 3, with my previous vote for coin 7.

Nice coins. I especially like coin 3 and coin 7. It looks like, I can only vote for 1 coin, because the choices are radio buttons, not checkboxes.

Maybe you could put an extra tray in the case, or a large rectangular pad (or multiple pads) which is the same size as a tray, on top of the stack of trays, to ensure that there is no extra space between the trays, or between the trays and the case, when the case is closed. Perhaps that would prevent the coins from falling out of the compartments, because the trays would be pressed against each other, and the trays would be pressed against the pad or against the case. Most of my coins are in 1-compartment Abafil velvet trays, within Abafil cases. Because I have so many coins in 1 compartment, I never carry my coin cases vertically. I always carry my coin cases horizontally, to prevent the coins from moving all around the 1 compartment. I also have 24 compartment trays, but I haven't been using them much, but maybe someday I will.

Not for me. I live in the US. My most recent coin shipment from Europe was in late November (France). I also received coin shipments from Europe in early November (France), and early October (France). And a coin shipment from England in the middle of November. However, I have all of my coins delivered to my PO box, not to my house address. Perhaps the post office signs for my coin shipments. I don't know.

Interesting coins. My favorite is the rhinoceros semis.

LOL! That's all I have to say.

Merry Christmas, Happy Hanukkah, Happy Life Day, Happy Saturnalia, Happy Yule, Happy Science Day, et cetera!

For Vcoins, I use the Chrome web browser, on my desktop computer. I agree with others in this thread, that I preferred the old Vcoins image format. To view the large coin image, I left click on the magnifying glass. On the resulting large image, to save the large image, I right click on the large image, and then I left click on "Save image as...". I just need to train myself, to always left click on the magnifying glass, rather than trying to left click on the small image.

Thanks @TheTrachyEnjoyer I was particularly interested in the discussion of the Constantine XI stavraton. I didn't know, that there was a "wedding" issue and a "siege" issue. Was that your voice, doing most of the talking, about the Constantine XI stavraton?

For me, there hasn't been much of a decision making process. I would suddenly become interested in an area, and then I would start to collect it. I'm sort of a generalist, but I have specialized in multiple areas. Often, I'll become very interested in a new area, and really focus on that area, and learn about the coins and the history of the people who created the coins, and buy multiple coins in that area. Then, I'll become interested in another new area. But, I'll still buy coins from old areas, if I see something that I think is interesting. And, I'll often become re-interested in an old area. In fact, I'm still interested, to a certain extent, in all of the areas, that I have collected. To try to stay within my budget, I try to buy only the most interesting coins. I have avoided late medieval coins (except for late Byzantine coins, late medieval Chinese coins, late medieval Vietnamese coins, and a few English silver pennies), Islamic coins (but I have 1 Islamic imitation of a Byzantine coin), and most world coins (except for Spanish colonial coins, English large copper pennies, and Japanese coins), because I'm less interested in those areas. Basically, I collect coins, that are interesting to me.

Hello @Hughie Dwyer Yes. PVC can damage ancient coins, medieval coins, and modern coins. PVC can damage bronze coins, and silver coins. PVC (Poly Vinyl Chloride) reacts with the coin metal, eating into the metal. It creates a powdery light green substance, on bronze coins. It creates a green slime, or clear slime, or white slime, on silver coins. How long it takes, for PVC to damage coins, depends on various factors, such as the temperature. A few days, or even a few weeks, may be okay, if the temperature is not too hot. Some dealers ship their coins in PVC flips. I always remove any coin, from a PVC flip, immediately. I don't even trust non-PVC plastic flips (SAFLIPS), even though many ancient coin collectors use them.

I collect ancient coins, medieval coins, and modern coins. I use Abafil velvet coin trays, inside Abafil coin cases. They sell deep trays, and regular depth trays. Currently, most of my coins are in 1 compartment trays. But, I also have a large number of 24 compartment trays. Here's where I buy them : https://www.coin.com/cases/ I also have a Lincoln cent collection, which I keep in Whitman blue coin albums, with hard plastic sleeves.

There are some nice looking and interesting coins, in this thread. I have an Eastern Roman collection, and yes, I have 1 of these coins. It's one of my favorite coins, in my collection. Basil II or Constantine VIII AE 40 Nummi Follis. 1023 AD to 1028 AD. Constantinople Mint. Class A3. Sear 1818. 28 mm. 9.27 grams. Obverse Jesus Christ With "EMMANOVHL" On Left Edge Greek For "Emmanuel" Meaning "God With Us" And "IC XC" On Left And Right Abbreviation For "IHSUS XRISTUS" Greek For "Jesus Christ". Reverse "IHSUS XRISTUS BASILEU BASILE" Greek For "Jesus Christ King Of Kings".

I agree. Also, it seems like collecting ancient coins, may be particularly hazardous, because it can be very addicting. It's tempting to spend just a little bit more, to buy a nicer looking coin, or a particularly interesting coin. Or spend $50 here, and $50 there, and $100 there (oh, it's just $50 more than $50), and by the end of the month, you've spend hundreds of dollars. And the price of ancient coins may start below $50, but then it goes up from there. And up. And up.

It seems to me, that one doesn't need a large amount of money, to collect ancient coins. As I mentioned above, many ancient coins can be bought, for less than $50 each. However, as with many other hobbies, it is easy to get carried away, or addicted, or obsessed, and spend more than one can afford. That's why, I find it useful, to keep track of how much I spend on coins and coin books, each month, and I try to stay within a maximum amount per month. However, I don't always succeed.