Watch List notes:

USA, aluminum medal ("so-called dollar"), 1893, World's Fair / Electrical Building / Aluminum, NGC MS 63 Prooflike. HK-161A. 37 mm Obverse with WORLD'S COLUMBIAN EXPOSITION above fair's Electrical Building in high relief, ELECTRICAL BUILDING below; reverse with MALLEABLE / TASTELESS, SONOROUS, / DUCTILE / UNTARNISHABLE. above ALUMINUM in fancy lettering on banner, CUBIC FOOT OF GOLD, 1204 LBS. / ,, ,, ALUMINUM, 179 ,, / THIS MEDAL / IS PURE. below, CHILDS CHICAGO in small text at bottom; plain edge. From a series of souvenir medals sold at the fair that promoted the use of aluminum, a metal that was just entering public use through developments in mass production in the 1880s. Lustrous, mirror fields with a few light contact marks for the grade. NGC #4739225-002.

Estimate: $175-250