Jaw
6177
Some possibilities, and details...
This year only new Reverso in GT are Reverso Florale, Reverso Volga and the harmonised Reversoes (previously discussed, please do a search, thanks!) and the Platinum 2 skeleton tourbillon, there are no other new Reverso in the Grande Taille size this year.
JLC exhibited the whole range of Pink Gold limited edition museum set, and I guess these 6 watches were the one you referred to (Please note that the Reverso Grande GMT wasn't displayed).
One other possibility is you saw the Special Sincere Limited Edition of Reverso Grande Date (we also covered this previously) or the Reverso Geographic.
The JLC watches on display (may not be complete) were:
1 Gyrotourbillon
2 Reverso Soixantieme 1991
3 Reverso Tourbillon 1993
4 Reverso Minute Repeater 1994
5 Reverso Chronograph Retrograde 1996
6 Reverso Geographic 1998
7 Reverso QP 2000
8 Reverso Platinum No. 1 Skeleton
9 Reverso Septantieme 2002 Platinum
10 Reverso Platinum No. 2 Tourbillon
11 Master 8 Day Perpetual
12 Master Ultra Thin Skeleton
13 Reverso Latitude
14 Special Sincere Jubilee Reverso Grande Date
15 Special Sincere Jubilee Reverso Grande Reserve.
Hope it helps... (photos of ALL the watch listed have appeared on this forum in the past, if you need one, let me know, I can re-post when I am back from my trip, Thanks!)
Jaw