It seems to be an Heuer "golden Hours" ref 734.508 (look at the catalogue)

http://onthedash.com/Guide/_Catalogs/1983_Chronograph_Catalog/?show=83TFAB7A.jpg

Here you can find scans of the manual.

http://home.xnet.com/~cmaddox/heuer/manuals/chronograph_moonphase/golden_hours.html

Andrea

: Hello

: it's my first time on the dash and I need your
: help

: I found a very special Heuer Chrono...never
: seen before

: do you know this model ?

: it's a real moon phase ? just a day night ?

: and what caliber inside ?

: can you give me your lights ;-)

: thank's for all

: I hope you can understand my english, because
: I'm not very fluent ...