Vtg Lot 11 Glass Marbles UV Glow Uranium Cadmium Swirl Red Oxblood White 5/8\" NM For Sale

Item Description​Lot Count: 11 vintage machine-made glass marbles.​Style & Pattern: White/semi-opaque milk glass bases featuring oxblood, amber-brown, and reddish-orange swirls and patch patterns (predominantly West Virginia swirl and Akro-style corkscrew/patch varieties).​Size: Standard player size, measuring approximately 5/8\" (approx. 15 mm – 16 mm) each based on the sewing gauge.​Color Palette: Cream/translucent white base glass paired with varying shades of dark mahogany, brick red, and fiery persimmon swirl trails.​UV Fluorescence Profile
​Under ultraviolet light (longwave and shortwave inspection), this group displays significant reactivity:​Uranium / Vaseline Glass (Green Glow): Several marbles feature intense, vibrant neon-green fluorescence throughout the base matrix, confirming the presence of uranium oxide in the glass batch.​Cadmium / Selenium (Orange/Yellow Glow): Multiple marbles exhibit vivid, fiery yellow-to-reddish-orange fluorescence along the colored ribbons and swirls, indicative of cadmium/selenium compounds.​Dual-Reactive: Select specimens display a striking combination of both neon-green matrix glow and bright orange swirl glow simultaneously.These were manufactured during the late 1920s to the 1930s (roughly circa 1925–1940), dating to the golden era of West Virginia machine-made marble production.Key dating indicators include:Pre-WWII Uranium Glass: The intense green fluorescence points directly to uranium oxide used in the base batch. In the United States, commercial use of uranium in civilian glass manufacturing was sharply restricted beginning in the early 1940s when supplies were requisitioned for the war effort.Glass Formulas & Cadmium Colorants: The fiery orange and yellow cadmium-doped ribbons, paired with the dense white base, were classic formulas used by West Virginia companies like Akro Agate and contemporaneous swirl makers throughout the Depression era.Manufacturing Seams & Shear Marks: The mechanical swirl patterns, soft fold creases, and cold roll traits are consistent with early machine-feed mechanisms of the late 1920s and 1930s rather than post-war automated runs.
​Detailed Condition Assessment​Overall Grade: Near Mint- to Near Mint (8.7 – 9.2) across the lot, with typical minor vintage factory and handling marks.​Surface Gloss: The glass retains strong factory wet-look luster and reflectivity with minimal surface dulling.​Surface Imperfections:​The majority of the marbles show clean surfaces with only scattered microscopic pinpricks and minute \"sparkles\" consistent with normal age and contact.​One marble (positioned on the outer-left in natural light photos) displays a small, visible surface hit/crescent mark.​No large clamshell chips, deep chunking, or structural internal annealing fractures observed.​Manufacturing Characteristics: Typical vintage machine cold rolls, slight seam creases, and tiny subsurface air pops inherent to original production.Please review the attached pictures for additional details. Shipping will be combined for multiple items purchased and shipped in the same package.