Overall: 1 1/4 in. ( 3.2 cm )
Coin; gold; bust right of King Joseph I on obverse, the Portugese royal arms on reverse; obverse "JOSEPHUS I D G PORT ET AL G REX / 1775"
Large manila envelope: Typed "Gold coin laid on the cornerstone of the NY / CITY HALL on May 24, 1803 when its erection / was commenced. Given by the builder, John / McComb to his son, John McComb, Jr., on October / 1, 1824. / With original letter of John McComb Jr. inside / relating to the history of the coin. / Date of gift unknown / Acc no: X.294"
Due to ongoing research, information about this object is subject to change.