Probably "None of the above."
I've had an MXT for over a year now and have NEVER found a silver coin.
Of course, here in Calif. we don't have the long history of the eastern states.
Couple things.
1. Metal detector have been around for decades now, and many places
are fished out of silver.
2. The silver coins, from what I hear from club members, are generally
deep - 6 to 10 inches, so you need a good sized coil or a DD coil.
Everyone I know uses the White's 6x10-inch DD coil, and that works well,
but some go for even bigger coils.
3. Going deep is a different ball game. I'd suggest when you find
an area where there are 60's pennies, to slow down, do a methodical,
overlapping scan with the detector, and listen for the faint signals.
Good luck!
