Watch List notes:

Cuba (struck at the Philadelphia mint), gold 1 peso, 1915, obverse struck-through error, NGC Mint Error MS 66. KM-16. Choice luster with light rainbow toning in a circular pattern on the shield side, the obverse with heavy die-polish lines (like a specimen strike) and evidence of striking through fibers, including a ball of stuff to left of the 1 in the weight, important to both Cuban collectors and collectors of Philadelphia mint errors. NGC #4345431-007.

Estimate: $1000-2000