Well as a owner of both Dunhill and Dupont gold lighters i can most certainly relate to that James bond movie.
I do think in the movie a Dupont lighter was used for the " receiver " of the golden gun.
A pic of a Dupont similar to the one i have, and at least by the surface are used in the movie.
Though the movie prop lighter do look more elongated like Dunhill lighters was, but then the pattern dont seem to be the same.
Mind you these lighters, not solid gold but rather plated silver
Nice lighters, sort of make me a little sad i no longer suck on death sticks.
When a Machinist apprentice in the 80ties, which do not enjoy a nice pay ( i earned less / a lot less than i did in my regular job i had while i was 16 / 17 )
Anyway when the kid whipped out a nice gold lighter to light a ciggy, that did make the older guys there look.
Of course this was when i was a punk, and i paid far from the store price for either lighter.

I have some times thought about retrieving my lighters from long term storage, CUZ while i no longer smoke i do light a candle now and then to keep the living room a bit warmer in winter.
Like Scaramanga, if you have to go, why not go in style.