Another interesting item on FB, A.B. Optimus flask?

Nothing to do with me, looks nice though,

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Maybe a stove tank converted into a black powder flask ?

 

It very well could be.

 

Great way to carry your kerosene with you....
On the hooks you hang the funnel, lighter, "spatel", oven want.

 

Very novel.

 

So do we know if Optimus made stoves for the vacuum oil company? The engraving matches the Optimus normal engraving.

 

Yes, Optimus was one of several manufacturers who provided stoves for the Vacuum oil company.

 

For interest: you can see from the attached photograph taken in Lisbon "Sunflower" was a brand name of the Vacuum Oil Company - picture below courtesy of the Biblioteca de Arte / Art Library Fundação Calouste Gulbenkian (flikr)
Second storage tank in from the left shows the logo