Today I pulled an old coin from my stack that I got at my LCS a couple years ago. It's from Germany so 
This coin is made of silver and has to be one of the oldest coins in my collection, let's take a look.
The obverse shows a castle surrounded by some kind of branches. The denomination is below that in a circle, "IIII SCHILL" for 4 schillings. On the left it says, "current 1725" which is an interesting way to say the year. Then on the right it says, "HAMBURGER", because who doesn't love a juicy hamburger!?
On to the reverse, which has a crowned imperial double-headed eagle with orb on breast! WOW!
Then there are a shitload of abbreviations that I have no idea about,
"CAROLUS.VI.D.G.ROM.IMP.SEMP.AUG. I H L".
This is the first year this coin was minted and there were 558,000 pressed. I wonder how many are still around?
The most interesting part to me is the thickness, which is 0.6 mm. Compare that to a modern US dime at 1.35 mm! Half the thickness, crazy.
