This is a Chubb Leamington safe with lost keys. The safe is actually open in the photo but it put up a battle. The tool used for opening the lock contained within this safe was designed for the various gauges of key that have been employed in this lock for different variants. My tool was not the correct gauge so I could not achieve the correct lift on the levers. Starting to doubt myself and the tool after some considerable time I had to resort to drilling a small inspection hole into the safe and into the lock case to see what was actually going on I was sure that 2 levers were not correct and I had tried every conceivable code on those two levers. As soon as I could see the gates of the levers I could see two levers, clearly out of line and after a very quick change to the tool and a bit of a wiggle the tool turned and the lock opened.
A great learning curve for me as I’ve since found out that the tool now comes with a sleeve (I now have one!) for this exact situation. Thinking that many other safe engineers that came before me had possibly had the same problem.
The door had also dropped on this safe so it required some force to get it open to be refurbished.
Thankfully I took many photos and measurements of this safe as I got called to open one a few days later in which the live relocker had fired. The relocker locks the safe up from within. With the photos and measurements I had taken a couple of days before I was able to make a tool in my workshop that worked first time opening the safe without any damage.