I have chosen to invest in silver bars because I know NOTHING about coins, rounds, proofs, silver content of coins, and everything else which is involved in coinage. I know that silver bars are minted by mints and state the .999 silver content somewhere on the bar. I have also stayed away from the "mills" .999 silver...which is nothing more than a piece of alloy covered in a LAYER of silver.
Anyway, the Silver / Gold ratio is falling which means that silver is getting more expensive. I was going to buy in when it was $4.00, $10.00, and $14.00 an ounce, but never really got my motor in gear to actually do it. Now, I have.
I check the SPOT price of silver everyday, got to EBay (and other sites), do some comparative shopping, and then place my order. The key words I use are "1 Troy Ounce Silver", "Silver Bars", ".999 Silver" and others. Do your own research and begin preparing for the inevitable collapse of the Dollar.