: -------------------
: If I may.
: The photo you posted of the 2 .
: Are the back covers the same? I have wondered
: about this my self.

I have no idea. Those are Chuck's watches and Chuck's pic.

: My date onlys are like these and one 2 have a
: Tag Heuer back, 1 has a Heuer back and all
: the rest have the plain back with the reg.
: #s we all know.
: I have always thought the the non stamped backs
: where 1st then the stamped then thay sold to
: T.A.G. and stamped the backs Tag Heuer an
: used up the remaning cases.
: One thing Omega keeps good records. Heuer has
: not seen fit to do what Omega has done. So
: we have to work hard to figuer things out
: with our Loved Heuers.

The caseback on my 510.501 is stamped Heuer.

eric