Vintage Vitro Agate Conqueror Marbles Lot 25 #MB12

A curated collection of 25 vintage machine-made and art glass marbles showcasing classic opaque white matrixes layered with rich color swirls, veining, and patch patterns. The grouping features a spectrum of traditional American glasshouse hues, including earthy oxblood reds, amber-orange swirls, deep cobalt slate blues, and jade greens across dense milk glass bases. Highlighting historic chemical formulations prized by antique glass collectors, select examples in this run incorporate uranium dioxide glass additives that produce a vibrant, electric neon green fluorescence under longwave ultraviolet illumination. Representing iconic mid-century marble manufacturing traditions, this 25-piece assembly brings together classic multi-tone ribbons, patches, and coveted UV-reactive glass runs. # MB12