Only. So I can not say I’m knowledgeable about all GP.
I’m not a big fan of the 1966 or 1945. Mainly because of there were many made. There are some exceptions but still, I don’t dig dress watches so much. Especially in Singapore weather and leather. If I had to choose between the two models, I would go with the 1945.
Apart from the laureato, I also feel the cushion case watches and the Traveller 2 are collectible. I attached some pics.
Cushion (38 mm):
Ref:
2498
2499
2598
9012
Hard to find them especially in good condition. The ones on c24 have dings and such except one from the UK.
Traveller 2 (38 mm):
Ref: 4940
Variants:
-military dial (can see on c24)
-silver dial with applied numbers
- gold case
- salmon dial
Ref 7710
-a very rare one. Made by GP for 5 month and about 57 made with two tone solid gold bezel on steel. There is one on c24 silver dial. I have the blue dial.
Lemania
34 mm with long lugs. 



















Hope that helps.