Single Vane Black/Amber
Master Glass Company · 1930s-1950s

Identification summary
A classic American machine-made marble featuring a single, wide internal ribbon of dense colored glass.
Visible record
- Maker candidate
- Master Glass Company
- Era
- 1930s-1950s
- Pattern
- Ribbon / Single Vane
- Rarity assessment
- Uncommon
- Condition assessment
- Near Mint
- Size
- Standard (approx. 5/8 inch)
- Material
- Glass