I thought all the LA cars had it on the pad, and Norwood switched this around January 1st of 69. I am pretty sure it is on the CRG here somewhere .
The only thing I notice is it looks like the numbers for the vin were stamped separately, and other examples of original LA blocks look like the vin number was stamped with a single gang, and looks more uniform. In Jerrys book the font seems to differ slightly as well, but I have not seen nearly as many as Kurt. If it were me I would want the guy to provide a lot more pics of the stamp, and get the input from CRG before I made a trip to see it in person.