Black Slag
Akro Agate Company · 1920s-1930s

Identification summary
A classic vintage glass marble featuring a dark, near-opaque base with white glass swirled throughout, creating a 'slag' or 'cloud' effect.
Visible record
- Maker candidate
- Akro Agate Company
- Era
- 1920s-1930s
- Pattern
- Slag / Swirl
- Rarity assessment
- Uncommon
- Condition assessment
- Near Mint
- Size
- Standard (approx. 5/8 inch)
- Material
- Glass