I have a old watch book (A Schiffer collectors from 1994) which features a Dunhill by LeCoultre. Basically, a gold filled case with stylised arabic font. Calibre is the Memodate calendar (825).
So perhaps as well as providing the movement, perhaps LeCoultre also decorated it with "Dunhill".
In case the movement is signed Dunhill the dial should
read Dunhill as well. Most likely the dial got changed.
What is the movement's caliber and serial number?
What sort of case is it? Hallmarks, serial...
Ilja
Without seeing a picture I can't agree, but yes there have been
JLC's with Dunhill branding. A friend from London has more knowledge
about this topic than me, but he is not an "online person".
Personally I have seen desk alarm/calendar clocks made by JLC,
but with Dunhill on the dial.
Ilja