Fireking Medeco keys. Codes 100-275. 64S is NOT the code! Read the post !PLEASE!

Description

---> The auction is for 1 (one) key ONLY! 2 keys are shown so you can see the obverse & reverse in one picture<---
--> 64S is NOT the number that I need. That number is on the front of all of the locks.<--
--> please read below<--
Medeco keys for Fireking file cabinets.
We need the following info/data in order to supply the keys:
The stamped number off the plastic/metal tag. It will be 6C NNNNLLL. The N=Number & L=Letter.                          EG: 6C 7037CNW.
The 3 digit number off the head of your existing key. EG: 144.
23Jul18:
I can no longer cut keys by the serial number. If you can't supply the 3 digit number or the code number then you need to call Fireking directly to order your keys.
I do NOT refund/cut more keys for keys that do not work unless I messed up cutting the key. Example: I cut a key upside down. I cut another key & shipped no charge of course. I have a very expensive machine that I cut these keys on. When I was cutting keys by the serial number that can be problematic as the lock may not be original and no one let Fireking know that the lock had been changed to update their records. But since I only cut known numbers the only issues I have had were of my own doing...
As always, it is better to ask questions up front if you are not sure about anything that is written here. Don't get mad at me when I have to email you to ask the questions that are already asked for here in this posting.
I am open to suggestions to make this more clear!