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For current circulating ones, none more common than the Canadian 10c, I'm sure you've all seen one

Flow lines are seen on certain coins. In particular, US halves of the early 70s usually exhibit them.

Uh, coins don't have "stretch marks"

Cool.

Wow, how'd it turn to that?

Or perhaps played with? (Though unlikely). I think the bubbles can be caused if there's corrosion in the zinc underneath (I've played with some zinc lincolns and weak acid before)

Interesting piece of script!

First time I've actually seen one!

Yep.

I was basically collecting world right off the bat. There's a good amount of Canadian and US coinage circulating together where I am, and also the odd other Commonwealth piece.

Haven't seen anything neat lately.

Nice!

First one is an agorah of 1960-80, second one is a "new agorah" issued 1980-82. Currency reforms in 1980, and 1985 respectively have rendered both coins worthless as currency.

Lemme grab my book...

Israel.

Cool. Is its friend a British 3d?

Yep, that'll be Thessalonica 61b bang on. Struck 312-13, before the folli continued to shrink down to AE3/4. I like how the coin is "crisp", despite the weak reverse.

Cool, I actually guessed right! Thanks for sharing!

The one that looks like it's fresh off the printer from some kid's crappy art project.

Who's your avatar guy? I'm certain on early 200s, but can't seem to pinpoint it on someone. Elgabal?

Great book. It's one of the few that explains one of my most unusual pieces- a clamshell.

As a note, JPEG is intended for actual photos. Pictures which are heavy in plain colors, like most of the note designgs presented here, would be probably be best saved as GIF.

"as" is an denomination, like "quarter dollar" or "dime"

The pitting would had been from all the time it's spent in less than ideal soil conditions before being dug and cleaned up. Though there appears to be some flan cracks, it also appears that there's a number of scratches, so it wasn't that bad of a coin to start with. The key to the identifciation would be the obverse legend. From the size and weight, I'm guessing this is an as, since the obverse appears to have a laureate bust.

Most likely pre-200. Do you have the size, weight, and better pictures? t looks like it should be attributable with good close-ups, and a bit of luck. Gradewise, I'd say G-VG, though there's some serious problems/flaws. "Choice" is a generic term which has no real meaning, except in describing a certain grade of UNC.