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JerryKolb JerryKolb is offline
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Join Date: Jun 2016
Location: Bend, Oregon
Posts: 10
COA Accuracy

COAs are not always accurate. I have a 1966 912 Karmann coupe. Chassis and engine numbers match, but the transmission does not. TheCOA gives the transmission number as 228018-902/1, but on the transmission the serial number is stamped as 228013-902/1, and it is clear that the 3 is actually a partial strike of an 8 number die, with little to no pressure applied to the left side of the die.

I have a good history on this car, going back to when it was delivered to its original buyer in Germany, and I have a copy of th Kardex from the factory as well as the COA. The odds of the transmission being replaced at any time by a transmission numbered only 5 numbers earlier in sequence is phenomenally small so I don't obsess over the difference

Today these numbers are machine applied, which should eliminate the possibility of error, but in the early days of six-digit VIN numbers these cars were built by small teams of workers using largely hand tools.

Note: I had this transmission rebuilt four years ago with new bearings, synchros and the other usual stuff in a transmission rebuild. Cost $4,500 — about $150 less than the entire car cost in 1966!

Jerry
Old 04-14-2021, 11:01 AM
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