I was called to a lockout today to what looked like a standard ERA rim cylinder on a wooden door. A quick check through the letter box with a mirror confirmed it was an ERA British Standard Nightlatch. While I had the letter box open I let myself in ( you know what I mean )
The customer wanted the lock changed because she lost her keys. No problem, changed the cylinder and off I went with the old lock. Later I stripped the lock to find that only the first 5 pins were there, the 6th hole at the back of the lock was empty, no spring driver pins nothing. The plug was also missing the 6th pin.
The cylinder was new'ish and didn't look like it had been stripped before. I found it abit strange to find an empty chamber in a lock. Has anyone come accross this before ? Its a bit strange to have the security of a 6 pin lock reduced to a 5 pin lock on purpose ?