Thanks for your reply. I’ll give it shot. Not real into coins. Mostly relics etcI had a Garrett sniper coil for my AT Pro, but never found squat with it. I thought it would help me to pick out non-ferrous targets in between all the nails at cellar holes. I did find a few small flat buttons with it, but no coins.
Two issues with it. One, it's very small, so it takes time to cover any ground. Two, it doesn't seem to go very deep. I would say maybe 4 inches or so. I eventually sold mine, but you may have better luck. The spots I checked were cellar holes I had detected to death, so maybe that's why I never found any coins with it. Definitely worth a shot, though. You might find a trime in all those nails! Good luck!