Looks like this
Mine has 1 letter and 3 numbers

 

Mine also is the same except it is a K and 3 digits.
The dealer has written something on the other side. It would be easy to toss it out.

My sister had an older Honda and she lost the keys. A friend at a Honda dealer made her a key from the VIN and the title. All he needed was the VIN, but the title proved ownership.

 

There is no way the "end user" can determine your key code. Honda's high security key codes run from H001 to N718. Depending on how comfortable you are with PMing me a picture of your cut key I can read the cuts and tell you what your code is. While I am not a locksmith by trade, I run a warehouse that supplies the machines that locksmiths and the dealers use for cutting keys, and in turn have to do technical support on these machines so I am well versed in reading depths on keys.

 

I had one of those tags for my son's new 2018 Accord, but I don't recall getting one for my 2018 RL

 

I did not get one with my 2018 Sport either.

 

I think I may have thrown out my Key Number Tag thinking it was a dealer stock tag.

Made that mistake once. Now I scan and safe everything after a car purchase, so at least there is a visual copy on file before I proceed to lose it.

Unfortunately that hasn't prevented my wife from losing her whole friggin' FOB (twice now) for her Odyssey. Of course, having the key code is frankly unnecessary if you still have a 2nd fob (or don't care about unsynching your car with the lost fob) and is small consolation once you see the bill for the replacement.

 

Mine was included on the key ring with the two fobs.

 

I got half of the tag. It was torn and the part with the numbers was missing.

 

I didn't get a tag but I think they wrote it in my PDI booklet.