Hi Zac,
also if the watch seems to use a case similar to Jarama, it isn't an Heuer.

The case and dial is used in a Olma watch and someone printed Heuer sing on a anonimous dial.
Look at this "bullhead": it's an Olma with the same dial style.

fake

and the original

: hi can anyone help me? this is a real treat for Tag aficionados as
: it would appear to be a very rare version, or perhaps a factory
: second.......and thus a test of said aficionado`s metal......

: NO markings inside movement, case back, or crown, valjoux 7734
: marked clearly.

: on the back we have the usual water resistant etc etc, and 905 in
: the center

: I am flummoxed.........

: thanks to the hero of the day who can decipher what this is.

: Zac