Black Swirl
Alley Agate · 1930s-1940s
Identification summary
Opaque black to slate-gray swirl with white to light-gray wispy ribbons, machine-made.
Visible record
- Maker candidate
- Alley Agate
- Era
- 1930s-1940s
- Pattern
- swirl
- Rarity assessment
- Uncommon
- Condition assessment
- Near Mint
- Size
- Standard Player - 15mm, just under 5/8 inch
- Material
- Soda-lime glass, opaque
Why this candidate
Best match for opaque dark slate-gray base with wispy white/light-gray swirl seen in both views, 15mm machine-made size, and glossy finish typical of Alley black-based swirls.