851 SPTC???
 

So here is the latest info from Ducati,
I recommend contacting them with questions regarding your bike. (tech@ducati.com)
The investigation continues,...............................

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Dear Mr. Griffin,
unfortunately we are not able to explain what SPTC means, moreover we confirm you the bike is a 851 SBK.
Regards,

ELENA CATTAGNI TECH@DUCATI.COM

Customer Service
Ducati Motor Holding Spa
Borgo Panigale - Italy
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Dear Mr. Griffin,
from our archives this Ducati 851 SUPERBIKE BIPOSTO was produced on the 31 October 1989.
Regards,

ELENA CATTAGNI TECH@DUCATI.COM

Customer Service
Ducati Motor Holding Spa
Borgo Panigale - Italy
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