9Watch Identification

[mebe]

Browsing a small antique type market in Rome yesterday and picked up (cheaply) a couple of watches that I liked. Can anyone fill in any details for me?

This one has no makers mark at all ('swiss made' on the dial and 'Plaque G10' in tiny letters on the case). It is pretty to look at and has some nice detail in the movement, but what is it?





I know what this one claims to be, it is quite worn and the strap is disintegrating. Is it real and if so roughly how old?



Thanks for any input.

[mebe]

Better picture of the second.

[mebe]

And first

[mebe]

Doesn't it! Still, cost about the same as a large beer. Still curious about the unlabelled one.