Originally Posted by
BobG
The original non-threaded "Camping Gaz/Bluet" cannister looked like this ...
It did not have the collar but just a dimple on top The stove threaded through a metal cap and penetrated with a sharp pin. You could not remove the cannister until it was empty. The one above is at least 35 years old and at one time could be found at any small hardware/general store in France. Not sure when they went to the collared design but good riddance to the old style! I once expected to be arrested when I removed a half used, hissing cannister at an airport and tried to discard it!
I remember those in Andalucia 20 years ago. My burner was threaded. Down there, the thread variety was difficult to find at the time. Fortunately, I ended up eating out more often than I had planned. It was so cheap at the time.