It looks genuine to me... the typo on the registers and the swiss near date is consistent with the early dials.
Should be interesting also the 'Singer' typo on the back, if squared or rounded.

Heuer produced both 1163 T and MH with Chronomatic dial, so why not both 1153 N and S?

P

: I have been sent this picture from a collector who was after my
: opinion as to its authenticity...

: It comes from a source i would trust, but not being a Carrera
: expert i thought i'd throw it open to the forum to
: debate...perhaps it's a 1158 variant?

: However the script sizing looks very similar to that on the 1163MH
: chronomatic and appears consistent with expectations, albeit a
: different sizing to the 1153 chronomatic (but then so to is the
: script different between the 1163T and MH chronomatic dials, re
: sizing).

: Thoiughts and feedback very welcome!

: Cheers

: Rich
: www.heuermonaco.co.uk