<p><strong>Out detecting an old picnic grove from the early 1900 in northern New Jersey when my E-TRAC shows a 12-12.</p> So I dug a plug about 8' down and see a piece of gold foil, after pulling it out of the hole I turned it over and saw the teeth marks. I found someone's gold dental caps. Passed over the hole again and pulled out an old beer bottle cap. Guess he used his teeth to open the beer.</p>