Went out today for the first time in several years. Decided to hunt a 25 year old addition to a 100 year old Park. Mostly woods with trails cut through it. The whole area has been heavily used for 200 years. Shortly after starting I got signal that was jumping back and forth between foil and a penny. Being curious I decided to dig it up. At first I thought it was a wine cap, but it turned out to be the top 1/4 of a cigar tube. Several feet away I encountered the same signal. I decided to dig it as well. Out popped a whole cigar tube, although bent. A couple of yards away I got what I was certain another one by the signal. Out came another cigar tube but unfortunately I speared it digging it out. I bypassed two more of the same signal and didn't dig. They are Robt. Burns Black Watch tubes that it would appear people collect since they are selling for $7.00 on EBay. I didn't gets signals on anything else (I was in coin mode) and it started to thunder so I cut out. I would ordinarily suspect a Dump for this type of find, but even when I turned off discrimination to try to get a better signal, nothing else registered. I know there are more of these there but my curiosity screams why these here?