That Longines would be worth some bling now dudes.
RE: movement... Blancpain makes their own in house and from what I know, always have.
While window shopping today (I did pick up a triple head watch winder!) I looked at few recent dive watches by Breitling and Omega and Vulcain. All are cool and swish in their own way, but the influence of the Submariner is very very clear. I had my Sub on my wrist for comparison, and while the Blancpain, in all images I've seen thus far, bears a passing resemblance, there is a unique thoroughbred quality. Well of course there is, the Sub was based on it, but has somehow become it's own evolved entity.
I hope to get to the Blancpain dealer tomorrow for an up close inspection.