MEXICO. Copper 1/4 Real (Quartilla) Pattern, 1836. Struck at the Soho Mint, By John Sherriff. NGC PROOF-64 Brown.KM-Pn53. Plain Edge. A lustrous and pleasing copper pattern with abundant original mint red in protected areas and lovely light brown patina atop of the devices. A beautiful example with great eye appeal sure to generate much interest from specialists.