I'm been eyeing an auction that's taking place in 10 days (in a small town in The Netherlands) where the 3 Louis Brandt special edition watches from the 1991 (2nd) release are on sale, all full set:

- One with date function - estimated at €1000-1500
- One Chronometer - estimated at €1500-€2500
- One Perpetual Calendar - estimated €2000-€3000

They seem to be very exclusive as I've been trying to find info online and have found some stuff:

- Omega mentions them as one of the "lost lines".
- Perpetual calendar only had 313 pieces made
- Chronograph only had 245 pieces made
- I'm finding several prices for sold items, between €5000 and €15000

Can anyone tell me more about this line and their value? Thanks!

See pics attached.