
Background: The lock is a BiLock that is simply the cylinder and the tail-piece. There is no shell, etc. I can take the tail-piece of the lock, but cannot get the chamber cap off the plug without some dremel work (or some serious prying). The lock came from a collection of old locks and has no key. There is a number '102' on the lock face. It looks in rather good condition but is not new. Onto the questions....
1. Are the pin combinations the same for each side? I've seen some keys that have the same combo on each side, and some that haven't. Is this up to the manufacturer/installing locksmith?
2. The specs state that it has two sidebars. Is this true? How can they be defeated by conventional picks?
3. Can impressioning be a valid method of key duplication for this type of lock? The lock came without a key, so I have to try and make a key. Even so, how am I going to acquire a BiLock key blank? Looks like some chronic hacksaw blade manipulation....

4. How can I tell whether it is a new generation or an old gen? It doesn't look ancient, but it has wear and tear on it.
Thank you guys. Any help is appreciated.

edit: picture included
