Failing mortise lock serviced after many years of use

We were asked to make the old mortise locks on the front door work again, so after stripping them down, cleaning all of the dirt out of them and making new keys, we re-fitted them to the door and they work well. I really couldn't believe the amount of dirt we got out of the old locks - they were VERY dirty. These are Union KYY locks which are usually found on commercial glass doors. We really enjoy this [...]