1903-Zs FZ Peso KM-409.3 N1 认证号29484942, PCGS号523848

Un peso minted in Zacatecas, Republica Mexicana with assayer mark FZ. Two reverse marks appear to be chopmarks, although larger than normal chopmarks of this period. Unknown if these are actual chopmarks or some other kind of Chinese counter-mark. Beautifully toned and otherwise mint state. Update 7/2015: The June 2015 issue of Chopmark News (volume 19) shows a coin on page 13 from the Juan Pablo Mejia collection which provides decent confirmation that these marks are indeed valid Chinese chopmarks. The newsletter coin is a 1901-MO AM Peso, showing two of this same large mark on the obverse of the coin, along with multiple valid Chinese chopmarks on the reverse.