If I can replicate it at home, it isn't an error.
Water is more dangerous than grease - it can crack a die or collar - it has surface tension missing in oils..
If you're near a library, they usually have some edition.
You ever struck coins/medals on a press? A drop of water can fill dies. That's why they call it hydraulics.
Copper and MS70 do not mix well.
I always ask if the coin's appearance could be done in my garage. If I can do it at home, it's not an error.
Krause World Coins Catalog has mintages.
Which currency are you referring to? The increases are different in US$, CDN$, China R, Mex $, etc.
MS64+
MS63*
Nice to hear that coin collecting and study, rather than investing is still alive. Too bad it's only in the Ancients, and maybe medals arenas.
Looks like glue.
Struck through grease or water, etc.
I don't think so. It would be sunk down into the die, so a raised point on the coins. Most times they are not seen on the obverse because the...
The greenish gray color gives the 35% Ag, 9% Mn and 56% Cu alloy away. Sorry, billon silver.
On proofs, yes.
Another thing to watch for is ironing. It makes lots of wrinkles go away, and makes notes feel crisper than they should.
Nicely done, and just as long as it needed to be. Thank you.
Back in the 1980s, a dealer offered me this "economy model CAL." for $1,300. I got the chance to photo it. I think that it might be the worst one...
Yes, but advertising what you have is a recipe for disaster, and some will look at it as opportunity and narrowing down targets.
Separate names with a comma.
