The owner sent me a photo of the Buck Tag, so we added this SSP to our Project:
http://www.specialservicemustang.net...info147188.htm
Note, the DSO number for this SSP is one digit off from another SSP in the same group whose VIN is four cars later:
http://www.specialservicemustang.net...info147192.htm
As I recall, that second one was a never-in-service low-mileage car that turned up for sale in Minnesota a year or so ago (
I THINK it is this one). The in-service history for the car in this thread is unknown.