Ordering Keys  We need the WHOLE Code
The KEY SERIES tells us the type and manufacture
of the key. The DIFFER NUMBER describes the cut. Both numbers are needed to cut the correct key. 

When ordering replacement keys you must provide all the information necessary. The code number that we need to cut the correct key is stamped on the original key and on the lockface. It is vital that your order contains the whole key code ie both the key series and the differ number. The KEY SERIES tells us the type and manufacture of the key and the DIFFER NUMBER describes the cut. Both numbers are needed to cut the correct key. Provided that you tell us the full key codes and the quantity of each key required then you should be able to place a query free order. Unfortunately the lockmakers do not always stamp the whole code
on the lockface and even if they do it is not always easy to see. HOW TO TELL IF THE WHOLE NUMBER HAS BEEN PROVIDED WHAT IF THERE ARE ONLY 3 OR 4 DIGITS??? Some common cases where different locks have the same digits include: Any number between 001 and 999 for a desk may be a Dams, L&F70 or 78 series, MLM etc
Moreover, a number between 701 to 900 for a Desk Pedestal will be MLM 3701  3900 if the lock face is round, 17mm diameter with a dome front rather than the KT series 30014999 which has a flat face to the lock 
For help and information please contact sales@keysplease.co.uk