Interestingly, my two minutes of research seems to point to VIN numbers and Tenni plaque numbers not correlating that well. My Tenni #112 is VIN ...114852. A website noting the auction of Tenni #108 associated it with VIN 114842. Perhaps the plaques were affixed to the Tenni(s) (what is the Italian plural of Tenni?) off the production line and so the loose correlation. Good luck. Please let us know what you discover. I wouldn't make up a number -- relish the mystery.