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As a multiple J-Custom and JEM owner and user of many years (i make my living with them), I always try to be helpful to others. Someone was asking about date codes, and i always found this (taken from another web forum) to be accurate. Hope it helps you all......quote...

"Well gang here it is the ultimate list on serial numbers from today to yesterday. Now I know there are a few yawning out there but think of those who do not know how to read them. I hope this list will be a useful one to all at ICW.

OK it goes like this..starting with Japanese built guitars:
1997 to Now
F=Fujigen factory,
2nd & 3rd digit=year made(eg 04=2004)
next 5 digits =month & build number
Jan=5000
Feb=10000
Mar=15000
Apr=20000
May=25000
June=30000
July=35000
Aug=40000
Sept=45000
Oct=50000
Nov=55000
Dec=60000
So an example here is for a recent model with a Serial number F0330210 = Fujigen 2003 June 210th guitar built.

1984 to 1996 example serial number F232104
F=Fujigen
2=1992 as an example
3=March production So 1=Jan 12=Dec
2104 guitar built for that month 2104th made

1975 to 1983
Example serial number C800358
C=March So A=Jan M=Dec
80 = 1980 year of build
0358= 358th guitar built for that month.

Sung Eum Factory
Example serial number E9052345
E=Sung Eum
9=1999
05= May So 01=Jan 12=Dec
2345= 2345th guitar built for that month

Korean Built Ibanez
Cort Factory Acoustics and Electrics start with C
eg C03071234
C=Factory
03=2003
07=July
1234=1234th guitar built for that month

Saehan Factory: acoustics start with SQ, electrics start with S

Sae-In Factory starts with A
These other factories follow the same serial number pattern as the Cort Korean factory.

Indonesian Made Ibanez

These guitars start with the following
I=Cort Indonesia factory
K=KWO factory
J=Sejung factory

The example serial number is K031034335
K=KWO
03=2003
10=Oct. So 01= Jan 12=Dec
34335 it is from the Acoustic range
So 00001 to 49999 are Acoustic Guitars, 50000 to 99999 are electric guitars and electric basses
All 3 factories use the same serial number system

China Production
W=World Factory
Z=Yeou Chern Factory
Example Serial Number WX32149
W=World Factory
X=October...but wait it goes like this for the build months
1=Jan
2=Feb
3=Mar
4=Apr
5=May
6=Jun
7=July
8=Aug
9=Sep
X=Oct
Y=Nov
Z=Dec
3=2003
2149= 2149th guitar built for that month.

So there it is peeps, this brings you up to date,if there is other stuff I have left out which I'm sure I might have like the Artstar Jazz Boxes with the H starting serial number...Lt Commander Roadster please fill in the missing blanks here
If you have anything else please put it here so we can keep a uniform thread to be used by all as good reference guide. I hope this is useful to all our new fellow Ibaneezer's who have joined the collective as of late.

Captain Ibanez"
 

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I have an interesting counter case:

A Ibanez J Custom JCRG613RBS

with a serial of the form F123374*

But this was made in april 2013 according to the final inspection ticket.
Also, this is a 2013 model.

However, according to the given rules, this should be a 2012 year model.

Definitely not a fake. Got a J-Custom RG8470z to compare it with (very similar guitar). Any ideas?
 

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Is the final inspection ticket from Australis? Which would have nothing to do with build date.
No it is the ibanez QC inspection card. There is a stamp with the date 13.4.21
And the name TOMO

I have another more detailed inspection card with a final date of 13.4.20

There are 4 signatures on that card (for different technicians, I.e. electronics, assembly, etc..)

Some of those signatures are identical to my other j custom (same luthiers and techs)

This was purchased from the USA.
 

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I'd be guessing but probably from a sample batch, that one just never went anywhere. That may be a good thing because I only inspected 1 built in 13' that had good neck relief.
 

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I'd be guessing but probably from a sample batch, that one just never went anywhere. That may be a good thing because I only inspected 1 built in 13' that had good neck relief.
Thanks for your feedback.

Interesting theory. This guitar has good neck relief. Another oddity was that it came with a TKL J-Custom case. I have heard of some 2012 models that come with that (as opposed to the traditional J-Custom case). Again, I think this is a USA edition thing.
 

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Something seems a tad bit off with this, namely that any January production guitars would include a 5 in the serial number. Based on this, the very first guitar produced in 2006 by Fujigen would be F0605001.

I know this is wrong because my RGT320QRBB has a lower serial than that. It's something like F0600064.
 

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The 5000/month increment serials ended many years ago and I've never been able to get a straight answer as to when, which is why I've never added them to my serial number page.
 

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And serials like this? How can i identify?

w w w . ibanezrules . com/images/used_index/rg9570dr/P1010056.JPG (without spaces)

Thank you so much for any reply!!
 
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