Just bought an old Taurus M66, need details

[AV8RLARRY]

I just purchased my ex PD friends old Taurus in the box but called Taurus today about serial number and its too old according to them for info? I think its a classic from my friends initial comments. It was never shot until me so its been new for a long time. Mainly I was wondering what year it was made, its a 6 shot and here's pics.. Thanks
Newbie Martin