Batch of Collector's Vintage Seamasters and one Constellation (my first)

So after a back and forth with that refinished black dial Constellation (that I passed on) I "found" another collector that was paring down his collection through an antique dealer.

Luckily he lived closer to me and we met up for lunch. And through some great conversation, he offered me a batch of his vintage Omegas for a good price. He said none of the dials or cases were touched and they looked clean to me. The casebacks all looked surprisingly sharp. I think I know the exact models, but not so sure. I know the calibers though. What are your thoughts? Any redflags? The collector had a full refund policy.

1.) Omega Seamaster L-6590 Cal 550 in Solid 14k Monocoque Case
2.) Omega Seamaster 168.022 Cal 564 Sparkle Dial
3.) Omega Constellation 168.029 Cal 751 Gold Plate
4.) Omega De Ville Cal 565 Linen Dial True 35mm Monocoque Case

They all look original and in good condition. If price is right I like all 4.

Yea that's a nice lineup, the Seamaster Cal 564 Chronometer is the pick of the bunch to me, they look fantastic when they have nice sharp cases to compliment the dial.

The Constellation C-Case would be my second choice as it too has a quite sharp bezel and decent case, though not quite as ideal a daily wear vintage model as the Seamaster 168.022