RICHARDS AND HARTLEY GLASS CO. No. 55 (OMN)
• AKA: Oval Loop; Question Mark
• MAKER: Richards & Hartley Glass Company/Pittsburgh, Tarentum-PA (Co. Operated: 1865-91), Introduced: 1891 Introduced
• NOTE: Items in emerald green made by US Glass c1898.
• MOTIFS: Circles/Balls, Loops/Ribbons, Swirls/Spirals