Can you help to identify these frames, bikes or parts?

Here's a pic if it helps!

I've had a look at the frame, which is an Eddy Merckx. It all looks legit, very light etc, and all the pantographs are there along with a visible frame number. My only concern is that the brake bridge at the back doesn't have anything panto'd on it and is not the same shape as other Merckx's that I've seen.

Were all Merckx frames made with the fancy bridge or were some made with normal ones?

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