This is an empty French Butagaz Bottle.
(There's also a steel screw-on top, with a carrying handle which is not in the photo. I'll add another picture later).
This Butagaz brand is No1 in France and the cylinder can be exchanged at many garages/supermarkets for a full replacement (Propane or Butane).
I always take a French cylinder when I go to France in my motorhome.
UK cylinders such as Calor are not available !!!
Also gas is cheaper in France than the UK, and Butagaz have the best prices.
I also have a spare regulator (used), and will include this in free to a buyer if needed.
The physical size of this cylinder is slightly smaller than a 15kg blue Calor bottle.
No reserve.
Collection only.