That’s a vintage cast iron oil/kerosene heater-stove, sometimes called a parlor stove heater or railroad/conductor heater depending on origin.
What you’ve got
• Material: Heavy cast iron
• Design:
• Glass viewing window (so you can see the flame)
• Adjustable side knob (controls airflow/heat)
• Top ring supports a pot or kettle
• Fuel: Typically kerosene or oil (not wood/coal despite the look)
Likely age
• Late 1800s to early 1900s
• Common in homes, cabins, and even train cars for compact heating
Condition notes (from your photo)
• Surface rust and wear (normal for age)
• Glass appears intact (important for value)
• No obvious cracks (very important—cracks reduce value a lot)
Value (rough range)
• As-is (like yours): ~$75 – $200
• Cleaned/restored: ~$200 – $400+
• Rare branded examples can go higher
What affects value most
• Manufacturer name (often cast into the base or body)
• Condition of the glass and internal burner parts
• Completeness (wick mechanism, fuel tank, etc.)
Selling tips
• Lightly clean (don’t over-restore—collectors like patina)
• Take photos of:
• Any markings or stamped names
• Inside burner area
• Bottom/base
• List as: “Antique Cast Iron Kerosene Heater Stove w/ Glass Window”
If you want, send a close-up of the base or any markings—I can try to identify the exact maker and tighten the value range.