The gold watch in that photo looks a lot like the movement in yours.
January 3rd, 2013
Re: HY MOSER chronograph
Possibly something by Lemania. Here is a similar movement, extended by a quarter repeater mechanism - the differences (especially the "mirror imaging" of the two movements) may well be connected to the fact that yours is a lepine (open face) watch and the one in the link is a savonette ("hunter") watch.