When I moved into my house 3 years ago, there was a wall safe present but no keys. I've slowly been attempting to pick it to no avail. It's dimensions are roughly 10cm high by 20cm wide (see pic for relative size to my hand).
My recent progress was buying an endo/boroscope to have a look inside (spoiler: it's empty), and this is where I identified it as being a Chubb (see photos). It appears like it could be a standard 3 lever mortice lock but I haven't had any luck with a 2 in 1 lever tool - I also had to grind down the pick so it could fit through the keyhole which is extremely small. Weirdly, the keyhole entrance seems to have some sort of collar which jiggles with a little bit of movement when I poke it, but otherwise doesn't seem to turn in conjunction with the levers etc. Could be nothing but thought I'd mention.
Does anyone have any experience with this type of safe/lock and able to offer words of wisdom? I am able to apply pressure on what I think is the bolt thrower with the 2 in 1 tool. Subsequently lifting what I feel to be 3 levers gives some inconsistent but encouraging clicks as it should, like I am lifting and holding the levers in place with my tension on the bolt thrower.
An update: I used the boroscope to try and see what was going on as a I was lifting the levers and something strange was observed. When lifting the lever furthest from the camera, it seems to curl round and the right most part of it enters the camera shot at the bottom of the lock. I've never seen this before or a lever that "curls around". Here's a video of it: https://gifyu.com/image/bmQ2r. Any thoughts? I've no idea why it would be designed like this or it's purpose. All the other mortice lock levers I've seen look like this: https://share.google/6nxOGJsX4qyDo89Y5.
When I lift the remaining levers nothing enters the shot from the bottom of the lock, not like the first one
