Yale Bicentric padlock

[gizmo9326]

Thanks to ALL who responded to my question about a this type of lock.
Since I already have a "master/change key.... YALE padlock.........
My search is for a "dual custody" lock showing at the plug's = GUARD & CHANGE, yes?
Looks like a difficult lock to find, from the various answer's that I received
thank you again, Donnie

link:

http://www.ebay.ca/itm/Very-Rare-Yal...b0f58a9&_uhb=1

[cowboyup]

Here are a few pics of the rare dual custody padlock by Yale.
Requires both keys to open this padlock.
One key is turned first then the other to open.
I picked this up on EBay a number of years ago, I paid through the nose for it and have not seen another one for sale since.
i just HAD to have it.
mike

Hi Mike,
Here's pics of a bicentric Yale I owned that could be opened by either key.
Interesting that they look identical yet operate differently.