there would be no silver left in the ground today for any of us to find.
Those 100 year old parks have probably been hunted hard for many, many years. The silver/old coinage still left in the ground will be elusive, and will take patience to find.
Just because you bought the top of the line detector doesn't mean you're going to be finding silver with it right out of the box. There are two big factors....knowledge/experience with your machine and location, to be a successful hunter.
Take, for instance, the professional golfers Tiger Woods and Phil Mickelson....just because you have purchased the same golf clubs as they use doesn't mean you're going to be able to shoot scores like they do on the course. Even with hours and hours of practice, you may never even come close to the way they play, but I know if you practiced consistently, in time you would be much better than you were a few months ago. That's the way it is for detecting too. You really have to understand your machine to find the deep, old coins, especially the ones hiding/mixed in with a lot of iron and trash items. Also, as for location....many times we think a place should be loaded with old items just waiting for us to find, but we end up not finding very much in some of those areas. Old home sites usually don't have as much as we think they should....Fact....if it's not there, we won't find it.
Enjoy your time with your top of the line machine....once you find one deep silver, it will continue to get easier...it's kind of hard to find something you have no idea what it sounds like beforehand. Place some silver coins in the ground...bury them at 5-7", to give you an idea of what to listen for.
You need to have lots of patience with this hobby, especially if you're looking for the older, deeper items. There's a reason why the older and deeper items are still left in the ground.....it's because those items are harder to find....having the best doesn't mean instant success, as I described above....practice, practice, practice. if you have any questions about your technique, or features/settings of your machine, there's plenty here that will help you out.
HH,
CAPTN SE
Dan