West Indies, imitation Brazil (Rio mint) gold 6400 reis, Maria I and Pedro III, 1784-R, PCGS AU details / tooled. LMB-466 (original). Bold full details in good gold (the dies probably cast from an original) but with new edge applied (shorter flan), some light marks and hairlines on fields, plus light file-marks on edge, but no outright tooling that we can see.
Estimate: $1000 - $1500