Watch List notes:

PORTUGAL: Countermarks, AR thaler, ND, Bruce-X11, large crowned arms countermark on 1780 Austria Maria Theresa thaler restrike (KM-T1), EF on EF host, RR. This countermark was presumably made to help these thalers to circulate in Madeira, Mozambique, and the Azores. An internet search turned up no examples of this type.

Estimate: 100-150 USD