I am trying to find some information about a Lejour Flygraf watch. It is noted as Ref. 92.103P made for Pilots, Engineers; All Sports-Skin Diving. This watch was owned by my Father in Law who passed almost 15 years ago. It is new, in the case with all the original paperwork. It is a cronographwith a number of functions including the scales A & B of the slide rule functions. It is a large stainless steel case with a stainless band. I would be interested in the era, history, as well the possible value of the watch. Condition is excellant and seems to be keeping perfect time. The only information I can find is about Yema Flygraf and am not sure if the is the same watch under a differnt brand name (possibly different in Europe then in the US).

Any help would truly be appreciated, either directly or in terms of sources of where I might look. Many thanks - Joanne.