1970 COMPASS-
WHITES SILVER EAGLE-
WHITES DFX, 4X6DD COIL, 6X8DD COIL, 950 COIL, 10X12SEF COIL-
GARRETT PRO POINTER AT, GARRETT AT PRO , MINELAB EXPLORER SE with 8.5x12.5 Cors coil
It looks like you just minted that coin- Congrats on the awesome find! I lived on the Mass/RI border for years, so RI's been very good to me as well....
Yes, it was very gently cleaned. First, I ran it under running hot water to remove the dirt, then dabbed it dry. Then I placed it in hot H2O2 for several minutes. After rinsing in water again, it looks like this. The H2O2 step darkens the copper a bit. I was just fortunate that the soil conditions were just right so as not to erode the copper (e.g., farmer's field fertilizer).