

Brass base with welded key.
This base was made by a century-old French company specializing in the design and manufacture of spare parts for oil lamps.
Thread diameter per gauge:
- 6'' : Ø = 25.1 mm
- 8'' : Ø = 27.8 mm
- 10'' : Ø = 32.8 mm
- 12'' : Ø = 39.5 mm
- 14'' : Ø = 39.5 mm