chassis number decoder, is this right? Options

[914 RZ-1]

So I'm looking for something that will tell me what the numbers mean on the chassis number. I find the "chassis number decoder" info shown. However, it doesn't seem to work. Am I missing something? My chassis number-found on the inside front fender on a plate (is this supposed to be the same as the VIN number?)-is 472 2910951, door sticker says car was built in Feb '72.

So using the decoder it seems my car was built in the 29th week of the year (29) on Monday (1) at the Karmann factory (9) and it was the 51st car built that day.

By the way, the chassis plate states the car was "Made in Germany", but there was a West and East Germany back then, so what gives?

[emerygt350]

So mine says 9/72 but I can't figure that out by the chassis number...

[SirAndy]

So mine says 9/72 but I can't figure that out by the chassis number...

@emerygt350
Looks to be 3729610 so according to the guide from the first post that would be:

37 week
2 day
9
610 - 500 = 110 car that day


Google-ing the calendar for 1972 week 37 was from September 10th to September 16
Since Karmann started counting on Mondays, the 2nd day that week would be:
Tuesday, September 12th 1972

(IMG:style_emoticons/default/bye1.gif)

[Olympic 914]

So mine says 9/72 but I can't figure that out by the chassis number...

@emerygt350
Looks to be 3729610 so according to the guide from the first post that would be:

37 week
2 day
9
610 - 500 = 110 car that day


Google-ing the calendar for 1972 week 37 was from September 10th to September 16
Since Karmann started counting on Mondays, the 2nd day that week would be:
Tuesday, September 12th 1972

(IMG:style_emoticons/default/bye1.gif)

Looks like mine was built the next day . 3739545

Sept 13th 1972 45th car

(IMG:style_emoticons/default/beerchug.gif)