moneyentrancement

YYMMFFRRRRR
In 2008 models begin to appear without a factory i.d. letter prefix.

• YY = Year of manufacture
• MM = Month of manufature
• FF = Factory I.D.
• RRRRR = Ranking number

Example: 08121520333 = 2008 / December / factory 15 / unit 20333
NOTE: Pre 1994 productions also frequently omitted factory letter codes and appeared as all numbers. e.g. 3042779
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FYYMMRRRR

• 
  
  • F/FF = Factory code (No factory designator for some 1993 and earlier models)
  • Y/YY = Year of manufacture (Single digit for some 1997 and earlier models)
  • MM = Month of manufacture
  • RRRR = Ranking number (may be more or less digits)

Example: 3021234 = Samick Korea / 1993 / February / unit 1234
Example: S3021234 = Samick Korea / 1993 / February / unit 1234
Example: S93021234 = Samick Korea / 1993 / February / unit 1234
Example: SI01021234 = Samick Indonesia / 2001 / February / unit 1234
Example: SI010212345 = Samick Indonesia / 2001 / February / unit 12345
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FYYMRRRR

• 
  
  
  • F = Factory code
  • YY = Year of manufacture
  • M = Letter code to corresponding month (A = January, B = February, etc.)
  • RRRR = Ranking number

Example: R01B0123 = Peerless Korea / 2001 / February / unit 0123.
mostly used on Peerless made Epiphones
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FYYSSSS
Epiphone Elite/Elitist models

• 
  
  
  • F = Factory code (F = Fuji-gen, T = Terada)
  • Y = Single digit year of manufacture (2002-2009)
  • YY = Double digit year of manufacture (2010-Current)
  • SSSS = Sequential ranking number

Example: F21234 = Fuji-gen Japan / 2002 / unit 1234
Example: T101234 = Terada Japan / 2010 / unit 1234
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FACTORY LETTER CODES
For Epiphone serial numbers that begin with a letter(s), this list identifies the factory & country where produced:

• 
  
  
  • B - Bohêmia Musico-Delicia (Czech Republic)
  • BW - ____?____ (China)
  • CI - Cort (Indonesia)
  • DW - DaeWon (China)
  • EA - QingDao (China) = Epiphone Acoustic
  • ED - Dongbei (China) = Chinese Dongbei means North-east.
  • EE - QingDao (China) = Epiphone Electric
  • F - Fuji-gen (Japan) = Elite/Elitist models (See: Epiphone Japan Serial Numbers)
  • F - Qingdao (China) = Les Paul Standard '59 / '60 / Tribute Models (See: F-Serial used on LP Std'59/'60 models and Tribute/Plus models)
  • F/FN - Fine Guitars (Korea) = non-Japanese models
  • FC - ____?____ (China 2000's) Possibly 'Global Fine Supply Ltd.'
  • FC - Fuji-Gen (Japan 1990's)
  • H - _______ (Korea) Found on a 1995 El Nino and a 1996 PR-200
  • G/GG - Identified as early modern Masterbilt acoustics (Epiphone says they have no record of G serials)
  • GR - Grand Reward (Farida, Guang Dong) China, Seen on some early Masterbilt acoustics
  • GP - ____?____ (Korea) found on a BB King Lucille from 2001 (verified by Epiphone Customer Service)
  • I - Saein (Korea)
  • J - Terada Gakki Seisakusyo (Japan)
  • J - Unknown. Possibly Jakarta, Indonesia - Found on a 1997 S-310
  • JK - ??? Korea or Indonesia - Found on a 1999 G-310 Junior
  • K - Korea Ins. (Korea)
  • L - Leader Musical Instrument Co Ltd (Korea)
  • MC - Muse (China)
  • MR - Mirr factory, China
  • N - See: FN
  • O - Choice (Korea)
  • P/R - Peerless (Korea)
  • QG - Qingdao Gibson (China) - Interim designation used prior to 'EA' & 'EE'
  • S - Samick (Korea)
  • SI - Samick (Bogor, Indonesia)
  • SJ - SaeJun (China)
  • SK - ???
  • SM - Samil (Korea)
  • SN - ____?____ (Indonesia)
  • T - Terada Gakki Seisakusyo (Japan)
  • U - Unsung (Korea)
  • UC - Unsung China (China)
  • WF - ____?____ (China) found on an Accu Bass Junior from 2001
  • X - ____ (China) - Early to mid 1990's serial number label - Verified by Epiphone Customer Service. Seen on 'Epi' brand guitars.
  • Y - Korea (seen on a PR775CE)
  • Z - Zaozhuang Saehan (China)

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FACTORY NUMBER CODES
For some models starting in 2008, if serial begins with numbers.
NOTE: The factories identified by these codes are based on patterns which forum members have observed. The numbers appear as the 5th and sixth digits in the serial number.

• 
  
  
  • 11 = MIC sticker on a '08 Masterbuilt 500
  • 12 = DeaWon or Unsung (China -- uncertainty remains as to which factory)
  • 13 = China - factory unknown
  • 15 = Qingdao (China) -- electric
  • 16 = Qingdao (China) -- acoustic
  • 17 = China - factory unknown MIC sticker on a J160E
  • 18 = China - factory unknown found on one 2009 model bass
  • 20 = DaeWon or Unsung (China -- uncertainty remains as to which factory)
  • 21 = Unsung, Korea
  • 22 = Korea (factory still unknown)
  • 23 = Samick factory Indonesia
  • I = Indonesia (this letter has appeared as the 5th digit on two authentic new models made in Indonesia)

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Important note from the guitar-un-dater site:
Disclaimer

The Guitardater Project cannot verify the authenticity of ANY Guitar, this site is simply meant as a tool to satisfy the curiosity of guitar enthusiasts. This website possesses NO DATABASE of guitars made by manufactures, instead simple serial code patterns that are available on this site and in the wider guitar community are used. It follows that potential scammers can use this knowledge to try to trick unsuspecting buyers. If you have any doubts as to a guitars’ authenticity please contact the guitar manufacturer before your purchase.

Gray and Light Blue Model D Indoor Rower
August 2006–Late July 2012

Blue and Light Blue Model D Indoor Rower
July 2003–August 2006

Manufacture Dates

July 2003–Present

Updated in August 2006 with the following features:

• Modified monorail artwork
• Redesigned foot stretchers
• Updated frame lock mechanism

Main Characteristics

• Color:
  • Light gray (shown at left) or black
    (late July 2012–present)
  • Gray and light blue
    (August 2006–late July 2012)
  • Blue and light blue
    (July 2003–August 2006)
• Handle: Ergonomic handle featuring a 10 degree bend
• Flywheel Housing: Damper setting numbers molded into the flywheel cover

Serial Number Location

Prior to October 17, 2005

The label is located between the V of the flywheel support legs, on the bottom side of the rower. The serial number represents the date the rower was boxed (mm/dd/yy). An example Model D serial number from this time frame is 082205/1.

October 17, 2005 to Present

Located between the V of the flywheel support legs, the label is located on the left side of the flywheel housing. See illustration. When asked for the serial number of your indoor rower, this is the number to use.

October 17, 2005–May 23, 2018

The serial number contains three groups of numbers separated by dashes. The first group of numbers represents the date the unit was boxed, the second group represents the Concept2 part number, and the third group represents the monitor serial number.

May 24, 2018–Present

The digits following 'Serial Number:' represent the serial number for the machine and the monitor. Date of boxing and the Concept2 part number are also present on the label.