Got a new toy Friday direct from Germany. (Thanks, Dicey!). An ABUS Rock 83/80.
That small circular part at the bottom of the lock, above the retaining plate, is a spacer and spring to keep the lock cylinder straight in the lock body. Being the European version, it takes an oval cylinder:
But it don't come with a lock cylinder. Could put in in an ASSA D-12 from a friend in Finland, or an ASSA Twin, or other oval cylinders.
But instead, will put in the lock cylinder that was shipped along with the padlock...
Pfaffenhain Y14 Deltus! Am not planning on using this lock anytime in the near future (though it is tempting to put it on my suitcase with a camera on my next trip just to see the expressions on the TSA people
), so not worried about showing the bitting. Figured people here would like to see the keys.
Back of the lock cylinder...
The key bow
The bitting of the keys...
That small notch at the tip of the key is intentional - for the Deltus pin.
What? You want to see the keyway?
OK, if you must... 
And yes, the dimple pins are hidden above the lowest part of the key pins. Guess that is to make access extra-interesting and fun.
Have not tried to pick this lock yet, but will give it a shot soon.There is another thread showing the pins if I remember correctly. If I can't find it, will take it apart and show the guts of the lock cylinder later, if the is interest.
Gordon
