First thing would be to make sure it is genuine. I don't see any red flags but trade dollars are the most counterfeited coin today. There does appear to be some cleaning damage on the obverse and some dings on the reverse, if genuine these would definitely affect the value. How and when did you acquire the coin?
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