That sounds like an interesting find! Based on your description — glass “mushroom” shape, velvet-lined box, metal connector at the bottom — here are the most likely possibilities:
1️⃣ Antique Electrical / Quack Medical Device (Very Common)
In the late 1800s–early 1900s, there were home electrotherapy kits that used glass electrode attachments shaped like mushrooms, combs, or rods.
They connected to a high-frequency generator and were marketed for:
- Hair growth
- Skin treatment
- “Nervous disorders”
These are often called violet ray devices. The glass electrode would glow faintly purple when powered.
If it’s this, the glass is hollow and the metal base screws or plugs into a handle.
2️⃣ Laboratory or Scientific Equipment
Some vintage lab apparatus used mushroom-shaped glass tops, but they usually wouldn’t come in velvet-lined boxes unless part of a specialty instrument.
3️⃣ Early Beauty / Cosmetic Device
Related to #1 — some were marketed for:
- Acne treatment
- Scalp stimulation
- Facial toning
Very common in estate sales.
4️⃣ Decorative or Perfume Atomizer Part (Less Likely)
Some antique perfume bottles or atomizers had unusual glass tops with metal fittings.
How to Tell
Check for:
- Is the glass hollow?
- Does the metal bottom look like it plugs into something?
- Any brand name or engraving?
- Does it rattle slightly (older electrodes sometimes contain low-pressure gas)?
If it is a violet ray electrode, it could have collectible value, especially if the original machine or box is included.
If you’d like, describe:
- Size (inches/cm)
- Clear or colored glass?
- Any markings?
- Does the metal part screw in or slide in?
I can narrow it down further.
