

So, what kind of lock is this? I've had it for almost 10 years, and when I originally came across it, it looked pretty much the same as it does now. Based on that, it's pretty safe to assume that it's a good bit older than that. I'm not sure whether it came from a house or a commercial premise, either way they don't seem to be in use anywhere nowadays.
The profile is smaller than any lock I've seen before. To put things in perspective, a 1A profile is 10mm tall, and this one is 8mm. What is this profile called, and have you ever came across one? I'm interested to know how old this actually is, and what they would have been used for. Also, it'd be cool if this particular profile was in use by any other companies at the moment because I'd like to get my hands on a brand new shiny one.

Thanks for any input, guys.