What month is likely for build date?

[NobleHops]

Greetings,

Given the relatively low serial number, what’s a good guess of the build month of this bike?

68675CB7-FB9E-4699-89BA-BC754304036D.jpeg

Tia for your thoughts.

N.

[JoeInTUS]

April 1978 according to Mike’s data

Here is a little update for those of you who are interested in this!

So far, my record keeping has resulted in the following chassis numbers built in each month. These are only those numbers that I can definitely assign to a built date.
One big problem is, that all CBXes sold outside of the U.S. and Canada did not have a date on the VIN plate and the chassis numbers are slightly different.
I found one mystery so far: A 1982 CBX in California supposedly has VIN number JH2SC0601CC401249 and a frame for sale in Germany had SC06-2401249

April 1978 CB1-20 00042 to CB1-20 02687
May 1978 CB1-20 02707 to CB1-20 03865
June 1978 CB1-20 03866 to CB1-20 06765
July 1978 CB1-20 06777 to unknown
August 1978 CB1-20 09025 to CB1-20 11051
September 1978 CB1-20 12881 to CB1-20 13082
October 1978 CB1-20 13467 to CB1-20 13762
November 1978 CB1-20 14503 to CB1-20 17287
December 1978 CB1-20 19069 to CB1 20 19927
January 1979 unknown to CB1-20 22356

June 1979 SC03-20 00030 to SC03-20 00706
July 1979 SC03-20 00734 to unkown
August 1979 none

September 1979 SC03-20 00001 to unknown
October 1979 -none
November 1979 -none
December 1979 -none
January 1980 - none
February 1980 -none
March 1980 SC03-20 11000
April 1980 SC03-20 11653 to SC03-20 12177
May 1980 SC03-20 12227

January 81 SC06..BC300089 to 300561
February 1981 301080 to 301350
March 1981 301747 to 302009
Others unknown

June 1981 SC06..CC400150 to 400794
July 1981 400879 to 401294
August 1981 401419 to 4002026
September 1981 402226 to 402245
October 1981 402293 to 402273
Other unknown

[EMS]

That post is 8 years old. Still basically correct, but a lot of additions in the meantime.