Glass marble in the style of a vintage swirl

This object appears to be a spherical glass marble, stylistically consistent with machine-made swirl marbles from the mid-20th century. It features a translucent green base glass with opaque or semi-opaque white and lighter green ribbons of color swirled throughout the interior and surface. The color pattern is characterized by soft, flowing striations that suggest a rotational manufacturing process. In terms of condition, the marble displays several small surface abrasions, tiny pits, or 'flea bites' consistent with age and use in play. The texture appears generally smooth with a glossy finish, though the surface wear slightly obscures the clarity in specific areas. There are no visible maker's marks or signatures, which is typical for items of this nature; as such, any attribution to a specific manufacturer like Akro Agate, Peltier, or Vitro Agate remains a hypothesis subject to expert in-person verification. The craftsmanship is consistent with mass-produced glass toys of the 1930s-1960s period. Identification is based solely on visual characteristics as no packaging or documentation is present.

Based on my visual examination of the provided images, this object appears to be a machine-made glass swirl marble consistent with mass-produced toy glass from the mid-20th century. Based on what I can see, the translucent green base and ribboned patterns suggest a manufacturing style associated with companies such as Akro Agate or Vitro Agate; however, I cannot verify the specific manufacturer from a photograph alone. Such an attribution remains a working hypothesis that would require physical inspection of the glass density and specific shear marks to advance. The value estimate is based on the item being a period-representative toy from the 1930s-1960s. The 'flea bites' and surface abrasions I observe are typical for played-with marbles but do negatively impact the value compared to a 'mint' specimen. In the current market, collector demand for common swirls is steady but heavily dependent on condition and rarity of color combinations. Because this example displays common colors and notable surface wear, its value is modest. I cannot determine the exact age or origin without a physical examination to check for modern glass-working techniques that might suggest a contemporary reproduction. If this item were determined to be a modern 'in the style of' replica rather than a mid-century example, the value would likely drop to less than $1.00. To reach a more certain conclusion regarding its origin and value, one would need to consult a specialized marble identification guide for specific swirl patterns or seek an in-person evaluation by a glass transit expert to confirm the absence of modern annealing characteristics or machine-made signatures incongruent with the proposed era.