I know the briquet didn't make the Brits taste; i was influenced by the 'WAR' composition, as it sort of sounds english ... to me
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I can tell you that the letter 'W' isn't used in Spain or Portugal; neither in France, unless a few exceptions or borrowed names.
OTOH, the 'warranted cast steel' stamp is often seen in British tools ... for what this is worth.
I hope you sort it out, anyway; i die of anger each i don't manage to discern the meaning of marks in my stuff.
Fernando