Its a beauty of a find! Good on ya! You should do something special with that! Like make a hat pin or something out of it!...
More on topic though, especially for Mega Claddies trying to make pay, the zinc penny signals are infuriating!...Its like damn!...So a guy buckles down and just gets really good at stabbing those targets without thinking about it too much..quick simple retrieval method of all pennies or targets and then just working the plan...
Gold and silver sometimes shows up, sometimes chains even, enough to make it a viable consideration.....
So, As my old G'pa admonished, "You mind the pennies and the dollars will take care of themselves"..this certainly applies for us...pennys and pulltabs and bastard signals is where the money is at...its a total bummer I know, so a guy gets good and fast for about any and all extractions without thinking too hard about it....
I do like the F70 (Patriot) set on Delta Pitch though, it certainly has the audio accuracy of range to alert a guy to what is 'not quite a penny/pulltab, but might be gold/silver'..The more off solid zinc and scratchier the better...so a guy just gets fast on the pull without thinking too much....
Its nice to have a rig that allows for this range of audio..