I have heard so many stories, and have direct experience of TAG Heuer vintage service dept not matching correct parts to their vintage watches. I even found out that they did not recognise a cal11 GMT movement recently, even though it was attached to a watch with GMT parts, instead they saw a Cal11 bridge and assumed it was a vanilla cal11 movement. I find it totally believable that they would fit incorrect non matching parts to any number of watches and would be 99% sure this watch did not leave Heuer in this configuration originally.

Rich

: Knowing also serial and movement will help.
: In my opinion it has been mixed up during service,
: using the available parts as already seen many times for several
: watches.