Thanks Ian,
I was hoping to find the chassis number at the usual location to be able to track down the build year and date. However, because my chassis appears to be a KVA type A, which was later upgraded with GTD subframes, there might not be any. Unless GTD did the mod and hammered in a chassis number at a different location. It could also well be that the car builder, in my case Mohr Automobile in Germany, did the upgrade themselves. They hammered in the VIN.
I will reach out to Malcolm for help.
Thanks, Bart