Hi,
I'm seeking for informations about gents Girard-Perregaux GP90.
I've found out that these watches were built from the mid 80s until the end of the 90s(?). Two different mechanical movements (with/without power-reserve) AFAIK ETA based were used.
What do you think about this model(s)? Do you have further informations f.e. about the movement, value, produced units etc.?
gilbert