I just bought a new home and I needed to add some locks.  The Georgian keyed locks matched my current door knobs. My only gripe is that the screwdriver I used to install the knobs rubbed the finish off.  Granted a black sharpie hid most of this and it is inside a garage so it doesn't matter much.  On the second lock installed I put an old sock over the knob and used a VERY skinny screwdriver with no damage to the knob.  Not certain if the instructions say this (who reads instructions on something so easy?) but I would guess not. I Always had brass knobs and never had any issues with installation or rubbed off finish. The locks work great and lock and unlock easily.  I would purchase again but these locks take extra care to avoid damage during installation. A warning in the packaging would have been helpful.