Utku,
You have reason for concern when buying anything online from unknown
sources. One avenue to pursue might be the pre-owned market...you
can buy absolutely mint watches for a considerable savings over brand
new pieces. The reasons people sell watches they've a=only worn a
couple of times is as varied as the sellers, but I quite often read
that someone has purchased a new watch only to realize they don't like
it as much as they thought they would...or they have a new piece and
suddenly a piece they've always wanted pops up and they have to sell
what they just purchased in order to afford the one they've been
waiting for...etc., etc.
To this end you might want to check the 'Collectors Market' portion of
this website and do a search for Jaeger. It's updated everyday I
believe and the sellers are most often known watch guys with long lists
of references. Also check with some of the bigger retailers who
also deal in pre-owned. Give them the ref. number of the piece
you need and let them find it for you pre-owned. Happy hunting,
you'll get the right piece at the right price. Be patient.