About the stripes on the padlock, that looks like a fairly standard laminated steel padlock: http://www.masterlock.com/product_details/LaminatedPadlocks/...

Now, if you were to delaminate the lock's layers and reassemble it piece by piece inside the bottle with authentic-enough looking rivets, I can see it fitting through the neck without a problem, but I don't have an explanation for the solid piece of wood that large.