[JoeC]

Marlin, the way I understand it, the last six digits are the sequence numbers, which increased one digit for each car built. For some reason they do not start the count from one. They start the count from a six-digit number. For the 1970 Nova the sequence begins W100001 and gets bumped up for each unit built. When the count gets up to 100000 units the Nova number becomes W200000. Therefore only an early Nova (less then 100, 000 units built) will have W1xxxxx. The Nova production total shows 307280 units. The VIN for the last Nova built at Willow Run should be W407280. Not all models started with 100001. The 1970 Camaro begins 500001 and 1970 Monte Carlo built in Arlington begins 200001. From your numbers it appears all COPO NovaÃs were built in a short time frame.